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January 27, 2015

January 27, 2015

**Recent Homework Questions About Trigonometry**

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**trig**

use a half angle formula to find the exact value of cos 75 degree
*Sunday, May 8, 2011 at 9:56am*

**trig**

Find a numerical value of one trigonometric function of x if secxcotx=4 A.cscx=1/4 b.secx=4 c.secx=1/4 d.cscx=4
*Sunday, May 8, 2011 at 9:20am*

**trig**

Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.
*Sunday, May 8, 2011 at 12:35am*

**trig**

A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the area of T? (A) 50p3/(1 +p3) (B) 10p3/(1 +p3) (C) 50/(3 + 3p3) (D) 10/(3 + 3p3)(E) None of the above.
*Saturday, May 7, 2011 at 6:36pm*

**trig**

A triangle T has vertices P, Q and R. The length of the edge between P and Q is 10, and the angles at P and Q are 60degree and 45degree respectively. What is the radian measure of the angle at R? (A) 5pi/24 (B) 5/24 (C) 5pi/12 (D) 5/12 (E) None of the above.
*Saturday, May 7, 2011 at 6:34pm*

**trig**

Find the numerical value of cos(60degree) + cot(30degree): (A) 1/2 (B) 3p3/2 (C) 12 +p3 (D) 52p3 (E) None of the above.
*Saturday, May 7, 2011 at 6:33pm*

**trig**

A tree casts a shadow 50 yards long when the angle of the sun (measured from the horizon) is 30 degree. How tall is the tree in feet? (A) 150p3 (B) 50p3 (C) 150 (D) 75p3 (E) None of the above.
*Saturday, May 7, 2011 at 6:31pm*

**trig**

The hypotenuse of a right triangle has length 8 and one of the other edges has length 3. What is the sine of the angle opposite the edge of length 3? (A) 3/p55 (B) 3/8 (C)p55/8 (D) 55/64 (E) None of the above.
*Saturday, May 7, 2011 at 5:16pm*

**trig**

Determine the value of cos(theta) given that cos(pi âˆ’ theta) = .2 (A) p.96 (B) .2 (C) âˆ’.2 (D) âˆ’p.96 (E) None of the above.
*Saturday, May 7, 2011 at 5:15pm*

**trig**

Find the sum of all of the solutions to the equation cos(2x) âˆ’ sin2(x) âˆ’ 1 = 0 in theinterval 0 < x < 5 pi. (Use radian measure for x.) (A) 15pi (B) 0 (C) pi (D) 10pi (E) None of the above.
*Saturday, May 7, 2011 at 5:12pm*

**trig**

2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc intercepted by a central angle of 100 degree. (A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above.
*Saturday, May 7, 2011 at 5:10pm*

**trig**

express the trig. ratios sinA,secA n tanA in terms of cotA.
*Saturday, May 7, 2011 at 5:49am*

**trig**

ABC is rightangled triangle. AD is the bisector of angle BAC. Angle DAC=15 degrees. X=CD. Find X. I know the answer is 7.1 but do not know how to do the actual sum. Can you please help AB = 23 CM
*Thursday, May 5, 2011 at 5:50pm*

**trig**

ABC is rightangled triangle. AD is the bisector of angle BAC. Angle DAC=15 degrees. X=CD. Find X. I know the answer is 7.1 but do not know how to do the actual sum. Can you please help.
*Thursday, May 5, 2011 at 5:00pm*

**trig**

(1/m)= (m-34)/(2m^2)
*Thursday, May 5, 2011 at 10:28am*

**trig**

angle a is acute and sin = u. find the other five trigonometric functions in the terms of u.
*Wednesday, May 4, 2011 at 8:21pm*

**trig confused.. pls help**

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 point B, which is due east of the mountain, the angle of ...
*Tuesday, May 3, 2011 at 9:55pm*

**trig**

solve for exact value for x between 0 and 2 pie 3sin2(x)-cos2=2?
*Tuesday, May 3, 2011 at 12:59pm*

**trig pls.. help me**

A rocket carrying a weather satellite is launched. As it moves through space, the rocket is tracked by two tracking stations located 24 km. apart, beneath the rocket. The 2 tracking stations both lie west of the launching pad. at a specific moment, the rocket's angle of ...
*Monday, May 2, 2011 at 4:03pm*

**trig**

how do you solve 2nd cos 6/11 (my calculator doesn't have 2nd function0
*Sunday, May 1, 2011 at 8:31pm*

**trig**

the terminal side of angle theta in standard position lies on the line that travels through point (9,1), find sin of theta, cos of theta, tan of theta. (give exact values)
*Sunday, May 1, 2011 at 1:43pm*

**Trig**

Water is being pumped at a 3 cubic feet/minute into a cylindrical storage tank with a circular base of a radius 4 feet. Find the depth of the water (d) as a fucntion of time (t)
*Friday, April 29, 2011 at 11:36am*

**Trig**

A silo is 40 feet high and 16 feet across. find the angle of depression from the top edge to floor. How do you solve this?
*Thursday, April 28, 2011 at 10:26pm*

**Trig**

A silo is 40 feet high and 16 feet across. find the angle of depression from the top edge to floor. How do you solve this?
*Thursday, April 28, 2011 at 10:11pm*

**Trig**

What is the period of f(x)= 1/2 tan(3x+pi/2) and -2/3 cos(x/3-1/2)?
*Thursday, April 28, 2011 at 10:01pm*

**Trig**

What is the vertical asymptote of y=tan(x-pi/3)?
*Thursday, April 28, 2011 at 9:33pm*

**Trig**

If two runners determine the angle of elevation of a hot air ballon is 24.5 degrees and 22 degrees. The hot air ballon is 1500 feet directily above a point on the highway east of both runners. How far apart are they? A trigonometry question.
*Thursday, April 28, 2011 at 8:39pm*

**trig**

Verify the equation is an identitiy: cot(x)tan(x+pi) - sin(pi-x)cos((pi/2)-x) = cos^2x Thanks
*Wednesday, April 27, 2011 at 8:28pm*

**trig**

A coil of wire rotating in a magnetic field induces a coltage E=20sin((PIa/4) - (PI/2)). Use an identity to express this in terms of cos(PIa/4). Types of Identities: Double Angle, Half Angle, Sum and Difference of Sine, Cosine, and Tangent, Pythagorean, Reciprocal, Quotient. ...
*Wednesday, April 27, 2011 at 8:23pm*

**identities trig?**

find all solutions to the equation in the interval [0,2pie] cos2x=cosx
*Tuesday, April 26, 2011 at 9:47pm*

**ah trig help**

use an apropriate sum or difference indentity to prove the double-angle identity cos2u=1-2sin2u
*Tuesday, April 26, 2011 at 9:39pm*

**trig**

use a sum or difference identity to find an exact value cos pie/12
*Tuesday, April 26, 2011 at 9:35pm*

**trig identies 5.3 &5.4**

use a sum or difference identity to find an exact value pie/12
*Tuesday, April 26, 2011 at 9:31pm*

**trig identities**

cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.
*Tuesday, April 26, 2011 at 9:22pm*

**math**

4cot^2x-4/tanx+cosxsecx factorin algenraic single trig function
*Tuesday, April 26, 2011 at 5:34pm*

**trig**

how do i solve this completing the square problem: 3x^2+12x+10=0
*Tuesday, April 26, 2011 at 2:54pm*

**trig**

The lengths of 2 adjacent sides of a parallelogram are 42 cm and 36cm. an angle of the parallelogram is 4o degrees. Find the measure of the longest diagonal to the nearest tenth of a centimeter.
*Tuesday, April 26, 2011 at 2:07pm*

**trig.**

Find the degree measures of 2 angles, one positive and one negative that are co-terminal with 135.
*Tuesday, April 26, 2011 at 2:05pm*

**trig **

Each child in a family of 3 children is going to get a pet. One wants a dog or cat, another wants a bird or rabbit, and the third wants a frog or snake. List a sample space or draw a tree diagram and determine the number of possible outcomes.
*Tuesday, April 26, 2011 at 2:04pm*

**trig**

finding the period of a graph given a equation y=-5sin1/3(x-pi/2)
*Tuesday, April 26, 2011 at 1:49pm*

**Trig**

a clock has a diameter of 1 foot what is the angular size if viewed from a distance of 27 feet
*Tuesday, April 26, 2011 at 1:04pm*

**algebra 2 and trig (math)**

Find the value of x in the interval 0 is less than or equal to x and 360 is greater than or equal to x which satisfies the equation cos x - 2 cos x sin x.
*Tuesday, April 26, 2011 at 12:09am*

**algebra 2 and trig (math)**

Find the positive acute angle that satisfies the equation tan(squared) minus tan = 0.
*Monday, April 25, 2011 at 11:49pm*

**trig**

What is the shortest possible length of a triangle side facing an angle of 20 degrees, if one of the other sides is 5? (answer should be a decimal number, correct within 0.001)
*Monday, April 25, 2011 at 7:07pm*

**trig**

given a central angle of 66 degrees find the area of a sector in a circle of radius 12.1 inches
*Monday, April 25, 2011 at 3:27pm*

**trig**

what is angular velocity if 57 revolutions are completed in 8 minutes?
*Monday, April 25, 2011 at 3:26pm*

**trig**

find, to the nearest tenth of a meter, the length of the arc intercepted by a central angle of 160 degrees if a radius of the circle in 8 meters long
*Sunday, April 24, 2011 at 10:13pm*

**trig**

find, to the nearest tenth of an inch, the length of the arc intercepted by a central angle of (4pi)/3 radians if a radius of the circle is 22 inches long
*Sunday, April 24, 2011 at 10:11pm*

**trig**

I need help with this problem: If San Francisco Giants homerun king, Barry Bonds, hit a baseball due west with a speed of 50.0 m/s, and the ball encountered a wind that blew it north at 5.00 m/s, what was the resultant velocity of the baseball?
*Saturday, April 23, 2011 at 6:03pm*

**trig**

an angle 30 with the distace of 24km and an angle of elevation of 45 with the distance of 15km.
*Saturday, April 23, 2011 at 6:48am*

**Math calculus-Trig**

Find the area bounded by the curve and the lines y = -x^2 - 4x; y = 1; x = -3; x = 1
*Thursday, April 21, 2011 at 6:16pm*

**Calculus/ trig**

Find the area bounded by the curve and the lines y=sinx, y= 1/2, x=5pi/6 and x=pi/6
*Thursday, April 21, 2011 at 5:17pm*

**trig**

write each equation in its equivalent logarithmic form 8 7=300
*Wednesday, April 20, 2011 at 8:15am*

**trig**

sin^-1(sin5pi/6)
*Tuesday, April 19, 2011 at 8:18pm*

**trigonometry**

simplify sin7x-sin3x as a product of trig functions.
*Tuesday, April 19, 2011 at 8:16pm*

**trig**

convert the point with polar coordinates (2,7pi/6) into rectangular coordinates.
*Tuesday, April 19, 2011 at 8:13pm*

**trig**

The parametric equations for a curve in the x-y plane are x=2+t^2 and y=4-3t. Determine the points where the curve intersects the x-axis.
*Tuesday, April 19, 2011 at 8:12pm*

**trig**

simplify the expression: sin(theta+pi/4) + sin(theta-pi/4)
*Tuesday, April 19, 2011 at 8:08pm*

**trig**

angle x lies in quadrant 3 and cos(x)=-.6. Find cos(3pi/2-x)
*Tuesday, April 19, 2011 at 1:33pm*

**trig**

simplify the expression sin(theta+pi/4) + sin(theta-pi/4)
*Monday, April 18, 2011 at 10:15pm*

**Algebra2/ Trig**

During a baseball season, a company pledges a donation to a charity of $5000 plus $100 for every home run hit by the local team. Does it make more sense to represent this situation using a sequence or a series? Explain your reasoning.
*Monday, April 18, 2011 at 2:20pm*

**trig**

what is the cube root of (-64i)?
*Sunday, April 17, 2011 at 5:54pm*

**trig**

What is the trigonometric notation for 3-3(sqrt3i)?
*Sunday, April 17, 2011 at 1:14pm*

**trig**

Multiply: 5(cos Pi/3 + i sin Pi/3)times 2 (cos Pi/4 + i sin Pi/4) and leave the answer in trigonometric notation.
*Sunday, April 17, 2011 at 12:56pm*

**Pre-Calc/Trig**

1. Find all possible values of k so that (3,5), (5,-1), and (k,8) are the vertices of a right triangle 2. Find all points with -x+2y=0 so that (x,y) is 5 units from (-1,4) 3. (f(x+h)-f(x))/h for f(x)= -5/(x+2) 4. The frequency of the sound produced by a string is directly ...
*Sunday, April 17, 2011 at 1:54am*

**trig**

Peter (P) and Jamie(J) have computer factories that are 132 miles apart. They both ship their completed parts to Diane (D). Diane is 72 miles from Peter and 84 miles from Jamie. Using the points D,J,and P to form a triangle, find m<PDJ to the nearest tenth of a degree.
*Saturday, April 16, 2011 at 5:39pm*

**trig**

Graph this trigonometric function. y=-4cos(x/2+3.14)+1
*Friday, April 15, 2011 at 8:47pm*

**trig**

A rocket tracking station has two telescopes A and B placed 1.9 miles apart. The telescopes lock onto a rocket and transmit their anlges of elevation to a computer after a rocket launch. what is the distance to the rocket
*Thursday, April 14, 2011 at 6:13pm*

**trig**

A rocket tracking station has two telescopes A and B placed 1.9 miles apart. The telescopes lock onto a rocket and transmit their anlges of elevation to a computer after a rocket launch. what is the distance to the rocket
*Thursday, April 14, 2011 at 6:08pm*

**trig**

Show that (90-45)=cos90 cos 45
*Thursday, April 14, 2011 at 2:04pm*

**alagbra 2 trig**

solve the equation 2ln(x+5)-1=7
*Wednesday, April 13, 2011 at 5:17pm*

**trig**

2cos(theda)-"2=0
*Sunday, April 10, 2011 at 10:37pm*

**trig**

3sin(2x)-2cos(x)=0
*Sunday, April 10, 2011 at 10:46am*

**trig**

express in terms of ¦Ð, the interval for which 4cosx ¡Ý 2
*Saturday, April 9, 2011 at 7:57pm*

**trig**

4cos(2x)+2cos(x)+3=0
*Saturday, April 9, 2011 at 11:04am*

**trig**

find the period and amplitude of each sine function.then sketch each function from 0 to 2pi: 1)y=-3.5 sin 5theta
*Thursday, April 7, 2011 at 8:22pm*

**trig**

If an equilateral triangle has a side of 10 ft what is its altitude to two significant digits
*Wednesday, April 6, 2011 at 9:35pm*

**trig**

Match each ratio in the first row with an equivalent ratio from the second row if angle A plus angle B = 90 degrees. SinA CosA TanA CscA SecA CotA SinB CosB TanB CscB SecB CotB Does this question even make sense?
*Wednesday, April 6, 2011 at 6:49pm*

**Trig**

A 60 ft. antenna stands on top of a building, From a point on the ground, the angles of elevation to the top and bottom of the antenna measure 58 and 44 respectively. How tall is the building
*Tuesday, April 5, 2011 at 6:58pm*

**Pre-calc/Trig**

If cot(a)=3 and sin(b)= (15/17) where a being alpha lies in quadrant 3 and b being beta lies in quadrant 2, what is the exact value of sin(2a)
*Tuesday, April 5, 2011 at 4:53pm*

**trig**

2 cosine squared pi over 8 minus 1 find exact value of given expression
*Monday, April 4, 2011 at 8:31pm*

**trig maths**

rewrite 7 sin2A – 5 sin A + cos2A = o to solve for A
*Monday, April 4, 2011 at 7:51am*

**trig**

If a triangle has an area of 50 square units and has angles that measure 15, 65, and 100 degress, find the length of the shortest side to the nearest tenth. Do not round till the final answer.
*Sunday, April 3, 2011 at 8:13pm*

**trig**

If a triangle has an area of 50 square units and has angles that measure 15, 65, and 100 degress, find the length of the shortest side to the nearest tenth. Do not round till the final answer.
*Sunday, April 3, 2011 at 8:12pm*

**Trig**

What is the exact value of sin^-1(sin(8pi/15)?
*Wednesday, March 30, 2011 at 9:07pm*

**math please help**

use an inverse trig function to write theta as a function of x (There is a right triangle drawn. The hypotenuse is 2. Theta is the angle between the base and the hypotenuse. The base/adjacent side of theta is labeled(x + 1) The side opposite theta does not have a value.) Use ...
*Wednesday, March 30, 2011 at 8:25pm*

**trig**

secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie
*Wednesday, March 30, 2011 at 7:06pm*

**trig**

I have to retype this. For which angles theta, with 0 degrees less than/equal to theta less than/equal to 180 degrees, is sin 3theta = (equal) -1 (negative 1)? a) 30 and 150 degrees b) 60 and 120 degrees c) 90 degrees d) 0 and 120 degrees How do I set this up?
*Wednesday, March 30, 2011 at 6:16pm*

**trig**

use an inverse trig function to write è as a function of x (There is a right triangle. The hypotenuse is 2. è is the angle between the base and the hypotenuse. The base/adjacent side of è is (x + 1) The side opposite è does not have a value.) a) &...
*Wednesday, March 30, 2011 at 6:12pm*

**Trig**

A Person is riding a bike with wheels that have a 14 inch radius at 15 mph. The bicyclist rides over some gum which sticks in the tire, assume this is t=0. 1. Find a function that gives the height in inches above the ground of the gum, with input is second
*Wednesday, March 30, 2011 at 6:07pm*

**trig**

For which angles ¦È, with 0¡ã ¡Ü ¦È ¡Ü 180¡ã, is sin 3¦È = -1? How do I set this up?
*Wednesday, March 30, 2011 at 5:53pm*

**trig**

solve csc^2x=3 for all possible solutions
*Tuesday, March 29, 2011 at 11:21pm*

**trig**

Use the appropriate cofunction to find an equivalent expression for cos 54° cot 24 sec 32 sin 36 csc 44
*Tuesday, March 29, 2011 at 9:23pm*

**trig**

A passenger airplane flying at an altitude of 1.8 km starts its final airport approach by descending at an angle of depression of 6°. How far along the ground is the airplane from its landing point
*Tuesday, March 29, 2011 at 9:20pm*

**trig**

Given a right triangle with legs 8 and 5, find the measure of the two acute angles. (Round to the nearest hundredth
*Tuesday, March 29, 2011 at 9:19pm*

**Pre Calc Trig**

Verify the following: tan( a + p/2) = -cot a a= alpha and p= pie since I do not have that button.
*Tuesday, March 29, 2011 at 1:16pm*

**trig**

y=1/4 cos (2/3 x +3 pi )
*Monday, March 28, 2011 at 9:02pm*

**trig**

In a circle of radius 12 inches, a sector is formed by a central angle of pie/4 radians. Find the area of teh sector to the nearest hundredth of a square inch.
*Monday, March 28, 2011 at 2:23pm*

**trig**

y = 3sec3x Amplitude =_________ Period = __________ Shift along x = ____________ Shift along y = _____________ Kind of reflection = ______________
*Saturday, March 26, 2011 at 9:22pm*

**trig**

ABC is an isoscele triangle in which [AB]=[AC]=5cm and [BC]=6cm. Calculate [AM], where M is the mid-point of BC.
*Saturday, March 26, 2011 at 7:22pm*

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