Sunday
May 26, 2013

# Homework Help: Math: Trigonometry

trig
write an equation expressing: cos37cos99 as a sum Review question. I know the formula. Having trouble with working it out.
Sunday, November 6, 2011 at 7:26pm

trig
write equations expressing: 19cos(theta-50degrees) as a sum of sine and cosine.
Sunday, November 6, 2011 at 7:13pm

Math C30 ( trig )
A roof in the shape of an upside down cosine wave is to be buile to cover an arena. The arena is 24m wide, the height of the roof at either side wall is 5m, and the maximum height of the roof is 9m. A) write a function that gives the height of the roof in terms of your ...
Sunday, November 6, 2011 at 6:20pm

Math C30 ( trig )
Solve : cosxtanx + root3cosx - root3/2tanx - 3/2 = 0 Give exact answers and formula for the general solution as well as the specific solutions.. Help
Sunday, November 6, 2011 at 6:17pm

trig
Find exact value of the expression. sin( 27pi/4 + 17pi/6)
Friday, November 4, 2011 at 12:10pm

trig
y= -(x-5)2 -3
Thursday, November 3, 2011 at 5:59pm

Trig
Solve 2cosxsinx + sinx = 0 using unit circle.
Wednesday, November 2, 2011 at 10:03pm

Trig
Solve 2cos sq x = 1 using the unit circle.
Wednesday, November 2, 2011 at 10:02pm

Trig
Find all real numbers that satisfy the equation. 2 cos x + 1 = 0
Tuesday, November 1, 2011 at 7:40pm

trig
Hi, I need to find the domain and rnge of the following: 1. X= 1/2 (cos theta + theta sin theta) Y=1/2 (sin theta - theta cos theta) total guess here, but here goes Domain cos theta = +/- 1 and domain sin theta = +/- 1 so domain theta sin theta = 0- +/-infinity so domain of X...
Monday, October 31, 2011 at 1:14am

trig
I'm confused with this concept: Okay, so I have this problem: cos2x( 2 cos+1)= 0 I understand I have to work the problems separately and I get cos x= 2 and cos x= 1/2 Now, what I don't understand is how this connects to pi, radians or the unit circle. If someone could ...
Saturday, October 29, 2011 at 3:57pm

Trig
Find the measure of the central angle, in radians, given the area of the sector as 22.6 cm2 and a radius equal to 3.7 cm
Saturday, October 29, 2011 at 3:28pm

trig
(3 tan^2x-1)(tan^2-3)= 0 can someone please explain how to do this problem and then explain the whole pie thing at the end...like, this is suppose to equal pie/6 b/c it's tan...im soooo confused.....
Friday, October 28, 2011 at 10:12pm

trig
guy wire is attached to a pole for support. If the angle of elevation to the pole is 67° and the wire is attached to the ground at a point 137 feet from the base of the pole, what is the height of the pole (round to 2 decimal places)?
Friday, October 28, 2011 at 5:38pm

trig
given the following values, what is angle B? A= 46 degree b= 4 c= 8
Friday, October 28, 2011 at 12:44am

trig derivatives
How do I find the derivative of 6 + 8cosx?
Thursday, October 27, 2011 at 11:21pm

trig
L ii i i i i i i i i A i i i i i i i i i i 4000 miles i i i i E ii right triangle have to find side EL. The range of a lighthouse is the maximum distance at which its light is visible. In the figure, point A is the farthest point from which it is possible to see the light at ...
Thursday, October 27, 2011 at 6:25pm

trig
Since its construction in 1821, Marblehead Lighthouse has stood at the entrance to Sandusky Bay, guiding sailors along Lake Erie’s rocky shores. The 65-foot tower is one of Ohio’s best-known landmarks and the oldest continuously operating lighthouse on the Great ...
Thursday, October 27, 2011 at 6:08pm

trig
The Hall of Fame exhibits are displayed in an eight-story, 162-foot tower. Pei originally designed a 200-foot tower, but had to reduce its height to meet the requirements of a nearby airport. From the top of the existing tower, an observer sights the entrance to the museum&#...
Thursday, October 27, 2011 at 5:52pm

Trig/Algebra II
(3+√2)/(3-√2) is equivalent to: a. (11+6√2)/ 7 b. (11-6√2)/ 7 c. 11/7 d. 7/ (11+6√2)
Thursday, October 27, 2011 at 1:35am

Calc
How do you do the derivative of an inverse trig function? arcsin (sqrt2/2)??
Wednesday, October 26, 2011 at 10:18pm

trig
Find another angle theta between 0 and 2pi that has the same cosine as 3pi/14
Wednesday, October 26, 2011 at 9:34am

Algebra
algebra 2 trig: A food vendor at a stadium sells hot dogs for \$2. At this price, she can sell about 500 hot dogs per day. For every \$.25 increase in price, she will sell 25 less hot dogs. The vendor's revenue can be modeled by R=(500-25x)(2+0.25x) Use vertex form to find ...
Tuesday, October 25, 2011 at 11:45pm

trig
let P be a point in Q1 such that the slope of the line connecting P to the origin is sq. root of 2 and the distance from P to the origin is 3 units. Find the coordinates of P, state all trig values for angle formed by the line and the positive x-axis, and the measure of said ...
Tuesday, October 25, 2011 at 8:48pm

trig
Find the values of the other five trigonometric functions for angle S. a) cos S=1/3 and the terminal side of angle S is in Q1. b) tan S=-10/7 and the terminal side of S is in Q2. c) sin S=-5/14 and the terminal side of S is in Q3. d) sec S=13/11 and the terminal side of angle ...
Tuesday, October 25, 2011 at 8:08pm

trig
Find the values of the other five trigonometric functions for angle S. a) cos S=1/3 and the terminal side of angle S is in Q1. b) tan S=-10/7 and the terminal side of S is in Q2. c) sin S=-5/14 and the terminal side of S is in Q3. d) sec S=13/11 and the terminal side of angle ...
Tuesday, October 25, 2011 at 8:03pm

TRIG
Verify the following identity. 1) sin(x+y) __________ = tanx+tany cosxcosy 2) Write cos3x in terms of cosx I cannot figure out how to solve for identities they are so hard. Any help appreciated!:)
Sunday, October 23, 2011 at 5:34pm

TRIG
1) Find an angle that makes the statement true: costheta =sin(3theta+10degrees) 2) Verify this proof: sec(Pie -x)= -secx Can someone show me how to solve for these. Very much appreciated!
Sunday, October 23, 2011 at 5:23pm

Math trig
a ladder 24 feet long leans against the side of a building, and the angle between the ladder and the building is 25°. a) approximate the distance from the bottom of the ladder to the building. b)if the distance from the bottom of the ladder to the buliding is increased by ...
Saturday, October 22, 2011 at 2:13pm

math c30 trig
Determine the period length of y= 2/3 sin (3x/2 ) I had 3pi/2 but the correct answer is 4pi/3 how do you get that???
Saturday, October 22, 2011 at 12:53pm

trig
as a hot air balloon rises vertically, its angle of elevation from point P on level ground 110 kilometers from th epoint Q directly underneath the balloon changes from 15 degree 5' to 31 degree 45'. Approximately how far does the balloon rise during this period? a. 38....
Saturday, October 22, 2011 at 12:45pm

trig
If S is an element of [ 3pi/2 , 2pi ] what quadrant does the terminating side lie in and evaluate for sine theta
Friday, October 21, 2011 at 4:12pm

trig
Find value of tan75/2
Friday, October 21, 2011 at 2:29pm

trig
Q1: In a right-angle triangle the base is 50 m long and its height is 40 m .find its area
Friday, October 21, 2011 at 1:26am

trig
Solve system of inequalities by graphing Y<2-x Y>x+4
Thursday, October 20, 2011 at 8:31pm

trig
what angle in degrees am i if the following is true: sin t > cos t if i were in quadrant three, sin t=cos t
Wednesday, October 19, 2011 at 11:10pm

trig
sinx=square root of 3 over 2, cosx=1 over 2 i want to find all six trigonometric functions
Wednesday, October 19, 2011 at 12:54am

trig
A water-park slide covers 100 feet of horizontal space and is 36 feet high. A new replacement slide will create an angle with the water surface that measures twice that of the original slide. The new slide will use the same horizontal space as the old slide. What is the height...
Tuesday, October 18, 2011 at 4:23pm

trig
50 feet
Monday, October 17, 2011 at 11:06pm

trig
cos 8 degrees fo feet 25 inches??
Monday, October 17, 2011 at 11:05pm

trig
if x=4 tan theta, express cos(2 theta) as a function of x
Monday, October 17, 2011 at 10:21pm

trig
find the exact values of the six trig functions of theta equals six pi divided by 8
Monday, October 17, 2011 at 9:01pm

trig
the basic N of an antenna rests on horizontal ground. the angle of elevation of the top R from a pt H on the ground is 42 degrees
Monday, October 17, 2011 at 6:54pm

trig
A third point C lies on the ground 5.4m from N the angle of depression of C from R is X degrees. Calculate to the nearest degrees the value of X.
Monday, October 17, 2011 at 6:43pm

trig
as the sun rises it casts a long shadow over a boy who is leaning next to a tree. the tree is 35 feet tall and the sun's rays create an angle of depression of 70 degrees with the top of the tree. how long is the shadow
Monday, October 17, 2011 at 9:15am

trig
Two pilots take off from the same airport. Mason heads due south. Nancy heads 23º west of south. After 400 land miles, how far is Nancy from Mason’s route? Round your answer to the nearest tenth of a mile. (Enter only the number.)(If someone had helped me with the ...
Monday, October 17, 2011 at 1:31am

trig
A hill rises from the horizontal at 15º. The road leading straight up the hill is 800 meters long. How much higher is the top of the hill than the base of the hill? Round to the nearest meter. (Enter only the number.)
Sunday, October 16, 2011 at 10:31pm

Trig
Factor and simplify the expression. 1-sin^3 x
Sunday, October 16, 2011 at 3:29pm

trig
Alan is using the equation mg sin A = umg cos A to determine the coefficient of friction, u, between a flat rock and a metal ramp. Find u to the nearest hundredth, if the rock begins to slide at 19º.
Sunday, October 16, 2011 at 3:32am

Trig
Find the exact value of tan 5pi/12 using the half-angle identity.
Saturday, October 15, 2011 at 6:39pm

alg2/trig
Thursday, October 13, 2011 at 8:36pm

trig
evaluate cos 12*pi
Thursday, October 13, 2011 at 11:10am

trig
To the nearest degree, determine the measure of angle X for each value of tan X a. tan X = 0.49 Just not sure how to solve these questions
Wednesday, October 12, 2011 at 11:38pm

trig
tan x = n tan y, sin x = m sin y then prove that m^2-/n^2-1 = cos^2x
Wednesday, October 12, 2011 at 5:03am

trig
THE SIDE OF A RIGHT-ANGLED TRIANGLE ARE 3XCM,3X-1CM AND 4X PLUS 1CM ,THE LAST SIDE BEING THE HYPOTHENUS FIND X.
Tuesday, October 11, 2011 at 10:01pm

trig
Find the exact value by using a half-angle identity. cos 22.5 degrees
Tuesday, October 11, 2011 at 9:19pm

trig
Given that tan B= 7/24 with B in quadrant III, find sin 2B, cos 2B, and tan 2B, using angle identities.
Tuesday, October 11, 2011 at 8:54pm

trig
Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
Tuesday, October 11, 2011 at 8:06pm

trig
PERIMETER OF A RECTANGLE IS 32CM AND AREA IS 55CM FIND THE LENGHT.
Tuesday, October 11, 2011 at 6:48pm

trig
Find tanx if sinx = 3/4 and x is in quadrant II.
Tuesday, October 11, 2011 at 1:45pm

trig
Consider the angle in standard position whose measure is radians. The terminal side of this angle is in the third quadrant and lies on the line given by y=10x. Find sin and cos.
Monday, October 10, 2011 at 5:18pm

trig
A rocket is launched at an angle of ascent (elevation) of 18 degrees. When it has traveled 6000 ft, what is its height above the ground?
Sunday, October 9, 2011 at 10:40pm

trig
a tower standing on level ground is due north of piont N and due west of point W, a distance 1,500 feet from N. If the angles of elevation of the top of the tower as measured from N and W are 8 and 11, respectively, find the height of the tower.
Sunday, October 9, 2011 at 5:14pm

trig
I have to factor the expression and use fundamental identities: sins^2xcscx^2-sin^2x sec^4x-tan^4x
Friday, October 7, 2011 at 9:32pm

trig
evaluate the expression below at t=4 p=\$400 and r=-9% round youre answer 2 decimal place
Friday, October 7, 2011 at 12:38am

trig
in a circle of radius 26, find the length of the arc spanned by a central angle of pi/4 radians. round your answer to 2 decimal places. use 3.1416 as an approx for pi.
Wednesday, October 5, 2011 at 8:38pm

trig
Triangle PQR is congruent to P'Q'R. If PQ= x+y, P'Q'+10, Q'R'= 3x-y, and QR=14, then what is x and y?
Wednesday, October 5, 2011 at 8:17pm

trig
Solve for ¥è in the equation tan ¥è = 2.42 when 180¨¬ < ¥è < 360¨¬. Round your answer to the nearest tenth of a degree. (Enter only the number.)
Wednesday, October 5, 2011 at 4:51pm

trig
Solve sin ¥è = -0.204 for 90¨¬ < ¥è < 270¨¬. Give your answer to the nearest tenth of a degree.
Wednesday, October 5, 2011 at 3:36pm

trig
what is the hietgh difference between 2 walls 6 metres apart to get a 17.5 degree pitch
Tuesday, October 4, 2011 at 2:53pm

trig
if cot 17 degrees = 3.2709, find tan 73 degrees
Tuesday, October 4, 2011 at 10:25am

trig
1-cos/1+cos= 2(cosec-cot)
Monday, October 3, 2011 at 12:08am

trig
Find all solutions to the equation 2cos(2x) = x + 1, correct to 4 decimal places.
Sunday, October 2, 2011 at 5:12pm

alg2/trig
Which expression is defined for all real numbers? a) x + 3/x^2 b) 5/(x + 2)^2 c)4/(x − 2)^2 d)7/x^2 + 3
Sunday, October 2, 2011 at 3:12pm

trig
Graph y=-2sin(x/2-pi/2)+3
Sunday, October 2, 2011 at 10:45am

trig
Question Part Points Submissions Used The angle of elevation to the top of a very tall Building is found to be 7° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building.
Sunday, October 2, 2011 at 4:44am

trig
Triangle XYZ has vertexes at X(-4, 5), Y(-3, 5), and Z(-3, 4). Find the measure of angle Y to the nearest degree.
Saturday, October 1, 2011 at 10:02pm

trig
The captain of a ship at sea sights a lighthouse which is 120 feet tall. The captain measures the the angle of elevation to the top of the lighthouse to be 19 ^\circ. How far is the ship from the base of the lighthouse?
Saturday, October 1, 2011 at 11:19am

trig
Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a comma-separated list. Round your answers to one decimal place.) cos θ = 1/7
Friday, September 30, 2011 at 12:46pm

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 ...
Friday, September 30, 2011 at 12:35pm

trig
All solutions in interval [0,2pi) of cosine theta plus one equals zero
Thursday, September 29, 2011 at 6:22pm

trig
All solutions in interval [0,2pi) of cosine theta plus one equals zero
Thursday, September 29, 2011 at 6:21pm

trig
A cashier is unsure whether a group of customers ordered and ate a large or a medium pizza. Medium pizzas have a diameter of 12 inches and large pizzas have a diameter of 16 inches. All that remains is one crust that has an arc length of 4.25 inches. All pizzas are divided ...
Wednesday, September 28, 2011 at 7:00pm

trig
From a point 45 meters above level ground, a surveyor measures the angle of depression of an object on the ground at 68°. Approximate the distance from the object to the point on the ground directly beneath the surveyor. (Round your answer to two decimal places.)
Wednesday, September 28, 2011 at 4:54pm

trig
Cos(2x+30)-Sin(3x-20)
Wednesday, September 28, 2011 at 5:33am

trig
Find a cofunction with the same value as sin 19 degrees
Tuesday, September 27, 2011 at 5:55pm

trig
Find all values of x in the interval [0, 2π] that satisfy the equation. 6 sin2(x) = 3
Tuesday, September 27, 2011 at 5:13pm

trig
Suppose that the point P(13,-30) is on the terminal side of the angle theta in standard position. What is sin(theta)? Give your answer to the nearest thousandth
Tuesday, September 27, 2011 at 2:56pm

trig
Suppose that the point P is the point on the unit circle that is associated by the wrapping function with the number 31. In which quadrant is the point P located?
Tuesday, September 27, 2011 at 2:56pm

Trig!
The identities cos(a-b)=cos(a)cos(b)sin(a)sin(b) and sin(a-b)=sin(a)cos(b)-cos(a)sin(b) are occasionally useful. Justify them. One method is to use rotation matricies. Another method is to use the established identities for cos(a+b) and sin (a+b).
Tuesday, September 27, 2011 at 12:21pm

maths
in right angled triangle ABC, angleBis90 degree and C is an acute angle of60degree. Also sin m<C=c/b. Find the following trig ratios.(a)mBC/mAB (b)cosec30degree
Tuesday, September 27, 2011 at 9:07am

Alg/2 Trig
Given the functions f(x)=-x^2+7 and g(x)=3x+4 find f(g(-5)) Write the composition above using an alternative notation.
Monday, September 26, 2011 at 10:44pm

trig
P(2, 9) is a point on the terminal side of è in standard position. What is the exact value of tan è?
Monday, September 26, 2011 at 6:23pm

Trig
Given sin theta = -3/5 and 0 is in quad 2, find Cos theta and tan theta
Wednesday, September 21, 2011 at 10:19pm

Trig
The point (-5/12) is on the terminal side of an angle theta in standard position. Find Sin theta, cos theta and tan theta Thank You!
Wednesday, September 21, 2011 at 10:18pm

trig
A woman standing on a hill sees a flagpole that she knows is 65 ft tall. The angle of depression to the bottom of the pole is 14°, and the angle of elevation to the top of the pole is 18°. Find her distance x from the pole. (Round your answer to one decimal place.)
Wednesday, September 21, 2011 at 3:13am

TRIG
THE SIN COS SEC TAN COT CSC 5X+Y=0
Tuesday, September 20, 2011 at 6:19pm

Calculus
2sin(2theta) + sqrt(3) = 0 interval (0,2pi) How do I solve this? I thought about maybe subtracting the sqrt(3) from both sides, so that i would have 2sin(2theta) = -sqrt(3) Then maybe dividing by two? sin(2theta) = -sqrt(3)/2 Am I doing anything right here? It's been a ...
Tuesday, September 20, 2011 at 11:47am

trig
Sketch the graph of f(x)=sin(x+30 degrees) and g(x)=cos2x in the same system of axis [-180 degrees;180 degrees]
Monday, September 19, 2011 at 12:02pm

trig
Given the radius of a wheel is 12inches and the angular speed is measured to be 3pie/4 radiant per second, find the linear speed of the piece of gum stuck to the where. Give both an exact answer. And a decimal answer rounded to 4 decimal places.
Saturday, September 17, 2011 at 10:45pm

trig
An automobile windshield washer 10inches long rotates an angle of 60degrres. If the rubber part of the blade only covers the last 9inches of the wiped, find the area of the windshield cleaned by the wiper.
Saturday, September 17, 2011 at 10:42pm

trig
A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one hour? Note the radius of earth about 4000 miles.
Saturday, September 17, 2011 at 9:19pm

Trig
2sin^2(x) = 2 + cos(x) interval [0,2pi) How do I solve this? Help would be greatly appreciated!
Friday, September 16, 2011 at 4:44pm

Trigonometry
Solve. 2sin(2ƒÆ) + ã3 = 0 interval [0, 2ƒÎ) How do I start this? I feel like maybe Trig Identities, but I'm not really sure.
Friday, September 16, 2011 at 12:26pm

Trig
how do i find the exact value of s [pie/2, pie] sin s = radical2/ whole number 2 what is s in radians? how do i figure this out without the use of a calculator. I drew the graph and located it in the second quadrant and i think the triangle is a 45-45-90 but i don't how to...
Thursday, September 15, 2011 at 10:27pm

Math trig.
find the length of the arc intercepted by a central angle of 35 degree 28' in a circle of radius 15ft....i cant figure out how to get it ??
Thursday, September 15, 2011 at 2:47pm

trig
find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3
Wednesday, September 14, 2011 at 10:38pm

trig
Help find the general solution to:sin^2x-3cosx+sinxcosx-3sinx=0
Monday, September 12, 2011 at 4:08pm

trig
Help find the general solution to:sin^2x-3cosx+sinxcosx-3sinx=0
Monday, September 12, 2011 at 4:07pm

Pre-Calc/Trig
Please check the first and help with the second-thank you Find all possible rational roots of f(x) = 2x^4 - 5x^3 + 8x^2 + 4x+7 1.I took the constant which is 7 and the leading coefficient which is 2 and factored them 7 factored would be 7,2 2 factored would be 2,1 used 7 as ...
Monday, September 12, 2011 at 10:53am

TRIG
A 5.5 ft tall woman casts a 6.2 ft shadow. Find the angle of elevation of the sun.
Sunday, September 11, 2011 at 7:23pm

trig
how do you factor completely.. 18x^2+3x-3?
Sunday, September 11, 2011 at 6:52pm

trig
What's the general solution for 3sin^2x+sinxcosx=2
Saturday, September 10, 2011 at 4:56pm

trig
2x+5y+3=0 what is the value of sin theta
Saturday, September 10, 2011 at 10:27am

trig
whats the horizontal distance traveled by a model rocket launched with an intitial speed of 120 feet per second when the rocket is launched at an angle of 60 degrees
Friday, September 9, 2011 at 11:31am

trig
tan ø = 5; Quad I How do I find the other 5 function values?
Friday, September 9, 2011 at 7:09am

trig
find the exact values of the six trig functions of the angle. -750 sin(-750)= cos(-750)= tan(-750)= csc(-750)= sec(-750)= cot(-750)= I've tried this question over and over again and i cannot get it right. i believe -750 is in the fourth quadrant but I'm not sure. can ...
Tuesday, September 6, 2011 at 11:54pm

trig
find a value of interval in degrees cotalpha=1.3692847 alpha=0.023903 is that correct?
Tuesday, September 6, 2011 at 9:20pm

Trig
Using tables or a calculator, find tan 16 degrees 15 + cot 32.7 degrees to the nearest hundreths
Tuesday, September 6, 2011 at 9:04pm

trig
find the value of alpha cotalpha=1.3692847 is 0.023903 correct?
Tuesday, September 6, 2011 at 8:57pm

trig
find reference angle 111degrees and -105 does it equal =75? i don't know the first one
Tuesday, September 6, 2011 at 8:28pm

trig
suppose theta is in the interval (90,180 degrees) find the sign of csc(-theta) is it positive or negative = positive???
Tuesday, September 6, 2011 at 8:25pm

trig
use a calculator to find the decimal approx. (roud 8decimal places) : sec28°6' does it equal 1.13362379 or 87.99624264 ???
Tuesday, September 6, 2011 at 8:12pm

trig
a tree casts a shadow 36 ft long. at the same timem the shadow cast by a vertical 7 ft pole is 4ft long. find the hight of the tree
Tuesday, September 6, 2011 at 6:47pm

trig
a tree casts a shadow 36 ft long. at the same timem the shadow cast by a vertical 7 ft pole is 4ft long. find the hight of the tree
Tuesday, September 6, 2011 at 6:41pm

Pre-Calc/Trig
Please help-I'm stuck really bad What are the roots of the equation x^2 - 4x + 3 = 0 I think I was suppose to use b^2 - 4ac so it would be -4 - (-4)*1*3 = 12 so the roots would be 12 and -12 Thank you for any help you can provide
Tuesday, September 6, 2011 at 5:05pm

trig
log(x-15)-2=-logx
Tuesday, September 6, 2011 at 12:19pm

trig
log4+log(x-7)=2
Tuesday, September 6, 2011 at 11:57am

trig
the length of the base of an isosceles triangle is 30.42 inches. each base is 26.54 degrees. find the length of the two equal sides of the triangle to the nearest hundredths. i get 15.19. is that right?
Tuesday, September 6, 2011 at 3:59am

trig
find all values of theta in the interval (0,360) that have the given value: sintheta= √2 ______ 2
Tuesday, September 6, 2011 at 3:54am

trig
Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^-1(-2) I got 2pi/3 could someone tell me if that is right? And if not, could someone please explain how to get the answer.
Monday, September 5, 2011 at 7:27pm

Could someone please check the first one and help me with the second one. I'm stuck-Thank you 1.What are theroots of the following polynomial equation? (x+2i)(x-5)(x-2i)(x+8) = 0 I think the roots are -2i,5,2i,-8-you take out the roots as opposites of what are in the ...
Monday, September 5, 2011 at 8:52am

Trig
Use linear velocity to find out how many miles per hour Jethro's truck is going. In 15 seconds, Jethro's truck's 24-inch diameter tires rotated 101 times.
Sunday, September 4, 2011 at 7:03pm

trig
cos(arccsc(-20)) Im not allowed to have a decimal answer
Sunday, September 4, 2011 at 9:57am

trig
Write the expression and evaluate. There is only one answer whIch should match the range of the inverse trig function. Sec^-1(-2) Sec^-1(-sqrt2) Tan^-1(-sqrt3) Tan^-1(sqrt3)
Saturday, September 3, 2011 at 4:46pm

trig
Write the expression and evaluate. There should only be one answer which should match the range of the inverse trig function. Sec^-1(-2) sec^-1(-sqrt2) Cos^-1((-sqrt3)/2) Tan^-1(-sqrt3) Could someone explain how to get the answer as well please.
Saturday, September 3, 2011 at 3:57pm

trig
If sin T = 1/2, then the value of sinT ( sinT - cosecT ) is
Saturday, September 3, 2011 at 8:26am

trig
how would i graph 3sec(x + (pi/2))
Friday, September 2, 2011 at 10:21pm

Trig
Find the exact value of each of the following using reference angles. a)sin 225degrees b) cot 120degrees
Friday, September 2, 2011 at 8:43pm

trig
Derive the identity 1 + cot ^2 theta = csc^2 theta by dividing x^2 + y^2 = r^2 by y^2
Thursday, September 1, 2011 at 10:27pm

trig
if cos(theta) equal -3/4 find sin(2theta)
Thursday, September 1, 2011 at 9:29pm

Trig
find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?
Thursday, September 1, 2011 at 9:16pm

trig
a propeller turns at 300 rpm. Find the angular speed in rad/sec and the linear speed at the tip if the tip to the center is 30cm
Thursday, September 1, 2011 at 12:35pm

Trig
assume A= alpha using complementary rule how do I solve for alpha? cos(2A+40) =sin(3A-60) I don't understand how to start the question. What are the steps in solving for alpha. Do i get cos to equal sin somehow?
Thursday, September 1, 2011 at 2:11am

trig
find the next two positive and negative angles coterminal with the quadrantal angle. 90 degrees. would the answer be..... would it be 450, 810?????? and -630, -270 ????
Monday, August 29, 2011 at 2:48am

Trig
cos270degrees -5cos180degrees (0/1)-5(-1/1) 0-5(-1) does it equal -5 or +5?
Monday, August 29, 2011 at 2:29am

Trig
Find the angle of the measure formed by the clock. 2:15
Monday, August 29, 2011 at 1:21am

Trig
A soccer goal is 24 feet wide. Point A is 40 feet in front of the center of the goal. Point B is 40 feet in front of the right goal post. Which angle is larger A or B? How much larger?
Sunday, August 28, 2011 at 2:39pm

trig
5sin^2 270degrees -3cos180degrees-tan(-180degrees) i got -2 but I'm not sure if i did it right?
Sunday, August 28, 2011 at 6:43am

trig
Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)
Sunday, August 28, 2011 at 5:47am

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