Saturday

April 19, 2014

April 19, 2014

Number of results: 9,357

**Trigonometry:Angles of Elevation and Depression**

What does arctan mean?
*Sunday, May 1, 2011 at 12:24pm by A.J*

**Trigonometry:Angles of Elevation and Depression**

dss
*Sunday, May 1, 2011 at 12:24pm by Anonymous*

**Trigonometry:Angles of Elevation and Depression**

what is arctan 528/2000 ?
*Sunday, May 1, 2011 at 12:24pm by bobpursley*

**Trigonometry:Angles of Elevation and Depression**

1.0352 feet(height)
*Sunday, May 1, 2011 at 12:24pm by Marvin*

**Trigonometry:Angles of Elevation and Depression**

Carlos is making some observations from the roof of a building. Which angle is the angle of elevation from Carlos to the helicopter?
*Sunday, May 1, 2011 at 12:24pm by Elly, M*

**Trigonometry:Angles of Elevation and Depression**

what is the height of a 15 degree angle over 4 feet
*Sunday, May 1, 2011 at 12:24pm by Anonymous*

**Trigonometry:Angles of Elevation and Depression**

Due to a storm, a pilot flying at an altitude of 528 feet has to land early. If he has a horizontal distance of 2000 feet to land, at what angle of depression should he land? Please show your work. Thanks in advance.
*Sunday, May 1, 2011 at 12:24pm by A.J*

**Trig**

The angle PAQ is the angle of elevation viewed from the ship, which is the same as the angle of depression viewed from the airplane (8°20'). The same for ship B. This is because the angles of elevation and depression are alternate angles between two parallel lines. I agree ...
*Friday, September 11, 2009 at 4:36pm by MathMate*

**Trig Picture**

The angle PAQ is the angle of elevation viewed from the ship, which is the same as the angle of depression viewed from the airplane (8°20'). The same for ship B. This is because the angles of elevation and depression are alternate angles between two parallel lines. I agree ...
*Friday, September 11, 2009 at 6:16pm by MathMate*

**MATH TRIG**

FROM A DISTANCE OF 80 M. THE ANGLE OF ELEVATION OF THE TOP OF A FLAGPOLE IS 18 DEGREES. dETERMINE THE HEIGHT OF THE FLAGPOLE.(NEAREST TETH OF A M. mY CONFUSION IS ANGLE OF DEPRESSION AND ANGLE OF ELEVATION. mY TECHER CALLS FROM TOP ELEVATION WHILE i INSIST ELEVATION IS FROM ...
*Wednesday, May 13, 2009 at 9:27pm by JASON*

**trigonometry**

Draw and explain an angle of elevation of the top of a building is 60 degrees and the angle of depression of its base is 15 degrees observed from a window of another building 15m.away.
*Wednesday, January 22, 2014 at 6:12am by irish*

**Trigonometry**

An observer in a lighthouse 350 feet above sea level observes two ships directly offshore. The angles of depression to the ships are 4° and 6.5°. How far apart are the ships?
*Monday, February 4, 2013 at 10:13pm by AwesomeGuy*

**trigonometry**

From a point 150 ft from the base of a building the top and the base of a flagpole on a roof edge have angles of elevation of 27degrees49' and 21degrees42' respectively. Find the height of the pole.
*Monday, January 6, 2014 at 7:47am by nina*

**Trigonometry**

A passenger in an airplane flying at an altitude of 10 kilometers sees two towns directly to the left of the plane. The angles of depression to the towns are 28° and 55°. How far apart are the towns?
*Monday, February 4, 2013 at 1:30am by AwesomeGuy*

**trigonometry**

An aeroplane at an altitude of 200m observes the angles of depression of opposite points on the two banks of a river to be 45 degree and 60 degree. Find in metres, the width of river.
*Tuesday, January 4, 2011 at 12:57pm by vad*

**math**

angle of depression and angle of elevation are concepts that should have been explained to you in your text or in class. If not, google "angle of depression"
*Wednesday, January 22, 2014 at 6:16am by Reiny*

**Right angle trigonometry**

A sailor sights both the bottom and top of a lighthouse that is 20 and m high and which stands on the edge of a cliff. The two angles of elevation are 3 and 42. To the nearest meter, how far is the boat from the cliff?
*Thursday, April 25, 2013 at 9:33am by Kayla*

**Trigonometry**

An observer on a cliff 1000 dm above sea level sights two ships due east. the angles of depression of the ships are 44o and 32o. Find the distance between the ships.
*Friday, February 22, 2013 at 12:03pm by Need help really fast!*

**trigonometry**

first one is correct for the second the angle of depression is measured down from a horizontal, so the angle of elevation from the station to the balloon is the same or 46.816666ΒΊ so tan 46.816666 = 996/x x = 996/tan46.816666 = 934.8
*Wednesday, January 7, 2009 at 2:59pm by Reiny*

**trigonometry**

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. Two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35° and to the other is 55°. How far apart are the cars? (Round your ...
*Sunday, December 2, 2012 at 8:56pm by heather*

**Math (trigonometry)**

A surveyor wishes to find the height of a mountain. He selects points A and B on level ground along the same line of sight to the mountain. He measures the distance AB to be 1503 m and the angles of elevation of the top of the mountain from the points to be 16.9° from A and 22...
*Sunday, December 2, 2012 at 5:30pm by Sammy*

**trig**

A man standing 9 meters above the ground observes the angles of elevation and depression of the top and bottom,of the top of the monument in luneta 6 degrees and 50 minutes and 7 degrees and 30 minutes respectively.Find the height of the monument?
*Monday, February 14, 2011 at 11:59pm by wenjelin*

**trig**

A man standing 9 meters above the ground observes the angles of elevation and depression of the top and bottom,of the top of the monument in luneta 6 degrees and 50 minutes and 7 degrees and 30 minutes respectively.Find the height of the monument?
*Tuesday, February 15, 2011 at 12:14am by wenjelin*

**Math-angles needed**

To solve this problem, you will need to find the angles of elevation of the two columns.
*Thursday, March 24, 2011 at 1:37am by MathMate*

**trigonometry**

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. Two motorists are driving cars on the highway, both on one side of the plane. If the angle of depression to one car is 34° and to the other is 51°, how far apart are the cars? (Round your ...
*Sunday, December 2, 2012 at 8:56pm by heather*

**College Trigonometry**

From a point 200 yards from the foot of a building, the angle of elevation to the top of the building is 37 degrees. Find the measure of the angles of the triangle formed by the building, the ground, and the line of sight to the top of the building?
*Wednesday, January 16, 2013 at 6:01am by Marie*

**Trigonometry (Math)**

From the top of a building 70 ft. high, two objects in a straight line from the building are observed at angles of depression of 28° and 41°6' respectively. Find the distance between the two objects. -Complete Solution please. :'(
*Tuesday, February 7, 2012 at 3:51am by Alianne*

**Math - trigonometry**

A bridge is 70m long. From the ends of the bridge the angles of depression of a point on a river under the bridge are 41 degrees and 48 degrees. How high is the bridge above the river?
*Sunday, January 10, 2010 at 4:06pm by anonymous*

**Trig**

A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 3 mi apart, to be angle x = 31° and angle y = 49°, as shown in the figure. (Round your answers to two decimal places.) Find the distance of the plane from point A. Find the ...
*Wednesday, February 29, 2012 at 8:00pm by Dan*

**Trigonometry**

Angle of Depression Find the angle of depression from the top of the lighthouse 250 feet above water level to the water line of a ship 2.5 miles offshore.
*Monday, February 4, 2013 at 1:38am by AwesomeGuy*

**trig**

A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 4 mi apart, to be x = 27° and y = 53°, as shown in the figure. (Round your answers to two decimal places.) (a) Find the distance of the plane from point A. mi (b) Find the ...
*Friday, September 30, 2011 at 12:35pm by stellar*

**trigonometry**

R and S are in the same horizontal plane as the base of a cliff, but R is 132.6 meters nearer it than is S. They find the angles of elevation of the top of the cliff to be 32 degrees and 36 minutes and 63 degrees and 13 minutes. how high is the cliff?
*Wednesday, November 2, 2011 at 6:52am by danica*

**trigonometry**

A lighthouse BC of unknown height stands on the edge of a cliff AB. From a point O, 2500 ft from the base of the cliff, an observer measures the angles of elevation of the top and bottom of the lighthouse and finds them to be 15°40' and 12°13'. How high is the lighthouse.
*Sunday, March 21, 2010 at 11:11pm by Michael*

**trigonometry**

From a point 55 feet in front of a church, the angles of elevation to the base of the steeple and the top of the steeple are 35 degree and 49 degree 20 minutes, respectively, Find the height of the steeple. (Round your answer to one decimal place).
*Tuesday, March 5, 2013 at 9:29pm by andre lessa*

**Trigonometry **

A climber, working his way up a vertical cliff stops for a rest on the ledge. The ledge where he stopped is 12 meters wude. The angle of depression from the edge of the ledge to the bottom of the cliff is 72 degree and the angle of elevation to the top of the cliff is 88 ...
*Saturday, December 10, 2011 at 4:17am by Tomina*

**trigonometry**

From the top of a hill 700 ft high an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two markerstones.
*Wednesday, January 18, 2012 at 8:14am by joan*

**trigonometry**

From lookout tower 80ft. high, a man observes from a position 6.5 ft. below the top of the tower that the angle of elevation of the top of the certain tree is 12deg40mins and the angle of depression of its base is 70deg20mins. If the base oof the tower and the base of the tree...
*Saturday, August 14, 2010 at 1:30am by Winsel*

**trigonometry**

two points, A and B, are 526 meters apart on a level strecth of road leading to a hill. The angle of elevation of the hilltop from A is 26deg30mins, and the angle of elevation from B is 36deg40mins. How high is the hill?
*Wednesday, August 11, 2010 at 10:03am by Winsel*

**Trigonometry **

From an observation tower that overlooks a small lake, the angles of depression of point A, on one side of the lake, and point B, on the opposite side of the lake are, 7degrees and 13degrees, respectively. The points and the tower are in the same vertical plane and the ...
*Wednesday, January 2, 2013 at 4:20pm by Marika *

**Health, Psychology-Depression question**

I am doing a report about depression and I was looking for opinions. Do you believe depression is curable without prescription drugs?(can certain foods help, can depression just go away, etc. )I know some people do not want to take prescription drugs for their depression so ...
*Monday, October 15, 2007 at 2:41pm by Camron*

**chemistry**

bp elevation, fp depression, vapor pressure.
*Wednesday, May 20, 2009 at 2:50pm by bobpursley*

**trigonometry**

howard and keight who are 2km apart are on a horizontal plane observe a balloon in the same vertical plane with themselves the angles of elevation are 50 degrees and 65 degrees respectively find the height of the balloon. A.if its situated between howard and keight B.If it is...
*Monday, March 19, 2012 at 7:25am by carlo*

**math**

It is the angle measured from the horizontal, depression is downward, elevation is upward.
*Thursday, February 17, 2011 at 9:31am by bobpursley*

**Trigonometry**

Two points, A and D, are in a horizontal line with the foot of a tower, CB, and on opposite sides. The distance between A and D is 535.4 feet while the angles of elevation of the top B are 12 degrees 46 minutes from A and 18 degrees 38 minutes from D. Let the perpendicular ...
*Monday, April 26, 2010 at 12:29pm by Alivia *

**trigonometry**

two pieces of wire stretched from the top, M of a vertical pole to the points L and N on the horizontal ground. the angle of depression of L from N =65 degrees. N is on the opposite side of the pole(from left)at an angle of depression of 72 degrees from M. Find the length of ...
*Monday, April 23, 2012 at 10:10pm by lindsay*

**Math**

1. A rangers tower is located 44m from a tall tree. From the top of the tower, the angle of elevation to the top of the tree is 28 degrees and the angle of depression to the base is 36 degrees. How tall is the tree? 2. An engineer determines that the angle of elevation from ...
*Thursday, February 6, 2014 at 6:34am by Tsunayoshi*

**trig**

A plane is flying 12,000 feet horizontally from a tall, vertical cliff. The angle of elevation from the plane to the top of the cliff is 45degrees, while the angle of depression from the plane to a point on the cliff at elevation 8000 feet is 14degrees. Find the height of the ...
*Monday, October 15, 2012 at 3:02am by Mae*

**Trigonometry **

The measure of one of the equal angles in an isoscles trinagle is twice the measure of the remaining angle. Determine the exact radian measures of the three angles in the triange
*Monday, October 26, 2009 at 3:33pm by Anonymous*

**Precalculus**

1. A man stands 12 feet from a statue. The angle of elevation from the eye level to the top of the statue is 30 degrees, and the angle of depression to the base of the statue is 15. How tall in the statue? 2. Two boats lie on a straight line with the base of a lighthouse. From...
*Monday, March 2, 2009 at 2:30pm by Mz. Suzie*

**Algebra/Trig Check Answers please **

Can you please check these answers thanks 1. A ladder 14 feet long is leaning against a house. The foot of the ladder is 4.8 feet from the house. Find the angle of elevation of the ladder and the height it reaches on the house. Answer: 13.2=height 18.9 =angle of elevation 2. ...
*Saturday, February 11, 2012 at 4:47pm by Missy*

**trigonometry**

a man measured the angle of elevation of the top of a tower to be 70 degree. When he walked 300 m. further, the angle of elevation of the top was 35 degree. What is the height of the tower?
*Tuesday, July 12, 2011 at 10:11am by eekim*

**math 2 trigonometry**

give me the solution from the top of a building the angle of depression of a point on the same horizontal plane with the base of the building is observed to be 60 degree what will be the angle of depression of the same point when viewed from a position one third of the way up ...
*Tuesday, September 25, 2012 at 2:01am by amadorlinas*

**plane and trigonometry **

a 30 foot flagstaff is fixed in the center of a circular tower 40 feet in diameter. from a point in the same horizontal plane as the foot of the tower the angles of elevation of the top of the flagstaff and the top of the tower is 30 degree repectively. find the height of the ...
*Tuesday, July 16, 2013 at 9:18am by rhen songalia*

**trigonometry**

as you walk on a straight level path toward a mountain, the measure of the angle of elevation to the peak from one point is 33 degrees. From a point 1000 feet closer, the angle of elevation is 35 feet. How high is the mountain?
*Tuesday, January 29, 2013 at 5:15am by noel chavez*

**Trigonometry**

Height of a mountain While traveling across flat land, you notice a mountain directly in front of you. The angle of elevation to the peak is 2.5°. After you drive 18 miles closer to the mountain, the angle of elevation is 10°. Approximate the height of the mountain.
*Monday, February 4, 2013 at 1:33am by AwesomeGuy*

**chemistry**

right on both. Vapor pressure depression with a nonvolitle solute depends on concentration, as does boiling point elevation.
*Thursday, November 12, 2009 at 4:02pm by bobpursley*

**chemistry**

I'm starting to learn about colligative properties and i want to know if there are different equations for boiling point elevation and freezing point depression? In the book they give me the equation: (delta)Tb= Kb times molality. But my teacher gave us: delta Tb = Kb times # ...
*Tuesday, June 1, 2010 at 4:14pm by jenny*

**Research paper**

Books have been written on just parts of it. What about some of the things on the sideline? John Steinbeck The Dust Bowl: Causes, effects Emerging Oklahoma after the depression The effects on labour legislation in California of the depression. The lure of California during the...
*Tuesday, February 24, 2009 at 10:26pm by bobpursley*

**Algebra**

I'm fine with angle of elevation problem, but angle of depression problems are tricky for me. Is this right? From a balloon 835 m high, a command post is seen with an angle of depression of 7 degrees. How far is it from the point on the ground directly below the balloon to the...
*Wednesday, May 14, 2008 at 10:06pm by Samantha*

**construct a triangle**

How can I construct a triangle ABC with vertices A(-4,2), B(4,3), C(1,-3). what are the angles in order from least measure to greatest measure Since you will have to use trigonometry to find the angles, surely you must know how to plot points. take the slope of each of the ...
*Wednesday, August 8, 2007 at 5:36pm by Sam*

**Pre-Calc**

A hot-air balloon is floating above a straight road. To estimate their height above the ground, the balloonists simultaneously measure the angle of depression to two consecutive mileposts on the road on the same side of the balloon. The angles of depression are found to be 24...
*Friday, March 23, 2012 at 10:45pm by John *

**Math**

3) From two tracking stations A and B, 350 km apart, a UFO is sighted at C above AB making angle CAB = 32 degrees and angle CBA = 54 degrees. Find the height of the UFO. The answer is 150 km, please explain to me how 4) from a boat on the water, the angle of elevation at the ...
*Saturday, November 24, 2012 at 8:18pm by Crystal*

**Simple Chem Help**

yes. It is called freezing point depression, and boiling point elevation.
*Thursday, November 12, 2009 at 4:15pm by bobpursley*

**math**

What is the meaning of angle of depression and angle of elevation?
*Thursday, February 17, 2011 at 9:31am by Natasha*

**trigonometry**

Can you tell me if these answer is correct. 1. From a boat on the lake, the angle of elevation to the top of a cliff is 35degrees13'. if the base of the cliff is 2664 feet from the boat, how high is the cliff(to the nearest foot)? i got 1880 feet. is this correct. and this one...
*Wednesday, January 7, 2009 at 2:59pm by please check*

**7th grade**

please explain 'angle of depression' and angle of elevation ..pls also use a diagram
*Saturday, May 16, 2009 at 2:42am by can*

**trigonometry**

An observer at A looks due north and sees a meteor with an angle of elevation of 70deg. At the same instant, another observer 30miles east of A, sees the same meteor and apprroximates its position as N 50deg W but fails to note its angle of elevation. Find the height of the ...
*Tuesday, August 10, 2010 at 10:20am by Winsel*

**Trigonometry**

Karla is riding vertically in a hot air balloon, directly over a point P on the ground. Karla spots a parked car on the ground at an angle of depression of 30o. The balloon rises 50 meters. Now the angle of depression to the car is 35°. How far is the car from point P?
*Friday, October 26, 2012 at 12:29am by Allison*

**trigonometry**

a space shuttle pilot flying toward the suez canal finds that the angle of depression on one end of the canal is 38.5 degree and the angle of depression to the other end is 52.75 degree. if the canal is 100.6 mi long, find the altitude of the space shuttle.
*Monday, December 10, 2012 at 5:59am by riza*

**Trigonometry**

A space shuttle pilot flying over the suez canal finds that the angle of depression to one end of the canal is 38.25 degrees and the angle of depression to the other end is 52.75 degrees. If the canal is 100.6 miles long, find the altitude of the space shuttle
*Monday, October 4, 2010 at 7:39pm by TIA*

**trigonometry**

A figure needs to be provided to answer this question. From where to where is the elevation angle being measured?
*Saturday, August 14, 2010 at 1:36am by drwls*

**trigonometry**

a surveyor finds that from Point A on the ground the angle of elevation to the top of a mountin is 23 degrees. when he is at point B that is 1/4 closer to the base of the mountain the angle of elevation is 43 degrees. how high is the moutnain? One mile =5280 feet. (Assume that...
*Tuesday, April 12, 2011 at 10:43am by carla*

**Chemistry II**

100 grams of KNO3 is dissolved in one liter of water. Calculate the freezing point depression and boiling point elevation.
*Monday, March 14, 2011 at 6:03pm by Michelle*

**Maths- Trigonometry**

4. A,B and C are points on a horizontal plane. A is 75 m from C on a bearing of 210 degrees and the bearing of B from C is 120 degrees. The bearing of B from A is 075 degrees. From A the angle of elevation of the top T of a vertical towel at C is 42 degrees. Find a. the ...
*Saturday, March 3, 2012 at 8:10am by Jack*

**Math**

Two parallel lines cut by a transversal can create all the following types of angles except A. Alternate interior angles B. Alternate exterior angles C. Corresponding angles D. Complementary angles
*Sunday, January 3, 2010 at 1:35pm by S *

**Trig**

I have no idea how to do this problem From an airplane flying 2 kilometers aboce the ocean, a piolet sees two ships directly to the east. The angles of depression to the ships are 8 degrees 20 minutes and 75 degrees 40 minutes how far away are the ships? I know what the anlge ...
*Friday, September 11, 2009 at 4:36pm by Trig*

**Trigonometry**

Find the angle of elevation of the sun when a tower 100m high casts a shadow of 120 meter long?
*Wednesday, May 18, 2011 at 1:29pm by fakku*

**Trigonometry**

Find the angle of elevation of the sun when a tree that is 10 yd tall cast a shadow 14 yds long
*Monday, March 5, 2012 at 1:10pm by :)*

**Math**

My mistake. The closest edge has the largest angle of depression. Your method is correct, but you are solving for sides a and b, not the angles A and B . a = 3708 m is the answer.
*Sunday, May 18, 2008 at 12:17pm by drwls*

**Trigonometry**

the angle of elevation of the sun is 31 degrees. find the lenght of the shadow, to the nearest foot, of a man that is 6feet tall.
*Tuesday, August 30, 2011 at 10:55pm by obieey*

**Per-calc Helppppp**

keep in mind answers should be pi radians or if necessary 3 dec. csc^2-2=0 all angles 4cos^2x-4cosx+1=0 all angles and name 8 angles 7sin^2x-22sinx+3=0 all angles and name 8 angles 2cos^2x-7cosx=-3 all angles sinx(2sinx+1)=0 all angles
*Thursday, April 19, 2012 at 9:20pm by Amanda*

**Gr. 12 Math - Trigonometry 3D**

From the top of a 1900 m mountain, the angle of depression to a cathedral that is due east of the mountain is 38 degrees. The angle of depression to a bridge due north of the mountain is 42 degrees. Find the straight-line distance from the cathedral to the bridge. This is a ...
*Sunday, November 11, 2007 at 1:39pm by Michelle*

**angles**

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 25 degrees. From a point 1225 feet closer to the mountain along the plain, they find that the ...
*Sunday, March 10, 2013 at 5:15pm by tyler*

**Chemistry**

In what experiment? In a depression of freezing point or elevation of boiling point it won't matter since you measure only the difference. But it will matter in other experiments.
*Tuesday, March 22, 2011 at 2:32am by DrBob222*

**Trigonometry**

The angle of elevation of the sun is 20 degrees. At the same time,how long is the shadow cast by a building 50 meter high?
*Wednesday, May 18, 2011 at 1:28pm by fakku*

**Math (trigonometry)**

From a boat on the water, the angle of elevation of the drop of a cliff is 31°. From a point 300 m closer, the angle of elevation is 33°. Find the height of the cliff. the answer should be 2411 m. I had tan31° = h/x+(x-300) tan33° = h/x-300 -> (x-300)tan33° = h. I subbed ...
*Monday, December 3, 2012 at 4:25pm by Sammy*

**health**

An example of a depression screening tool includes the ? A. Patient health Questionnaire B. Center for Epidemiologic Studies Depression scale C. Geriatric Depression Scale D. All od the above
*Wednesday, March 12, 2014 at 2:29pm by melvin*

**Trigonometry **

How do u find the angles of a triangle whose sides are in the ratio 2:4:5?
*Tuesday, November 6, 2012 at 10:37pm by Kevin *

**health**

An example of a depression screening tool includes the ________? A. Patient Health Questionnaire B. Center for Epidemiologic Studies Depression Scale C. Geriatric Depression Scale D. All of the above D?
*Saturday, August 11, 2012 at 10:42pm by Aya taraf*

**Trigonometry**

If someone could tell me if this is correct, it would really help me out. Problem: A statue 20 feet high stands on top of a base. From a point in front of the statue, the angle of elevation to the top of the statue is 48 degrees, and the angle of elevation to the bottom of the...
*Thursday, December 10, 2009 at 4:39pm by Lee*

**trig-need more information**

1. Is the rocket launch-pad midway between the two telescopes? 2. What are the observed angles of elevation?
*Thursday, April 14, 2011 at 6:08pm by MathMate*

**trigonometry**

assuming you meant that the angle of elevation between the person and the top of the building is 59°, the height h is h/21 = tan59° plug and chug to solve for h
*Thursday, October 18, 2012 at 11:45am by Steve*

**trigonometry**

The angle of elevation of the top of a tower to point A on the ground is 61 degrees. At point B it is 600 feet farther from the base, in line with the base and the first point and in the same plane, the angle of elevation is 32 degrees. Find the height of the tower. This ...
*Thursday, March 18, 2010 at 10:24am by berriengk*

**chemistry**

50 g of NaCL is dissolved into 800 ml H2O. i need to know if is molarity, g/equivalent, freezing point depression, boiling point elevation or osmolarity. nad how to resolve please give me a hand
*Monday, November 21, 2011 at 3:34pm by chelsy*

**chemistry**

50 g of NaCL is dissolved into 800 ml H2O. i need to know if is molarity, g/equivalent, freezing point depression, boiling point elevation or osmolarity. nad how to resolve please give me a hand
*Monday, November 21, 2011 at 3:34pm by chelsy*

**geometry**

If Quadrilateral QRST is a parallelogram, which is not necessarily true? a. Opposite angles are congruent. b. The diagonals bisect each other. c. Angles are four right angles. d. Consecutive angles are supplementary.
*Sunday, January 2, 2011 at 2:58pm by whitney*

**math**

if someone could please help that would be muchly appreciated. A group of mountain climbers are using trigonometry to find the height of a mountain located in the rockies. From point A, which is due west of the mountain, the angle of elevation to the top is 56 degrees. From ...
*Saturday, April 3, 2010 at 2:12pm by deborah*

**Trig**

A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 6.7 mi apart, to be 36° and 41°, as shown in the figure
*Wednesday, February 29, 2012 at 8:00pm by BOB*

**Math**

I have two questions that I need help with. 1. Angle of Depression: A Global Positioning System satellite orbits 12,500 miles above Earth's surface. Find the angle of depression from the satellite to the horizon. Assume the radius of Earth is 4000 miles. 2. Geometry: A regular...
*Tuesday, March 25, 2008 at 12:25am by Danielle*

**chemistry**

I can look it up. I can ask someone. I can use colligative properties; either depression of freezing point or elevation of boiling point. I can use mass spectrometry. There must be other ways I can do it.
*Wednesday, April 21, 2010 at 4:15pm by DrBob222*

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