Sunday
January 22, 2017

# Homework Help: Math: Trigonometry

## Recent Homework Questions About Trigonometry

trig
guy wire is attached to a pole for support. If the angle of elevation to the pole is 67Â° 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 by shye

trig
given the following values, what is angle B? A= 46 degree b= 4 c= 8
Friday, October 28, 2011 by rebecca

trig derivatives
How do I find the derivative of 6 + 8cosx?
Thursday, October 27, 2011 by lily

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 by Taylor

trig
Since its construction in 1821, Marblehead Lighthouse has stood at the entrance to Sandusky Bay, guiding sailors along Lake Erieâ€™s rocky shores. The 65-foot tower is one of Ohioâ€™s best-known landmarks and the oldest continuously operating ...
Thursday, October 27, 2011 by Taylor

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 by Taylor

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 by Lily

Calc
How do you do the derivative of an inverse trig function? arcsin (sqrt2/2)??
Wednesday, October 26, 2011 by Hannah

trig
Find another angle theta between 0 and 2pi that has the same cosine as 3pi/14
Wednesday, October 26, 2011 by Anonymous

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 by Steve

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 by Chelci

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 by Chelci

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 by Chelci

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 by ALISON

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 by ALISON

Math trig
a ladder 24 feet long leans against the side of a building, and the angle between the ladder and the building is 25Â°. 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 ...
Saturday, October 22, 2011 by jule

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 by don

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 by sam

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 by Keith

trig
Find value of tan75/2
Friday, October 21, 2011 by Ram

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 by Anonymous

trig
Solve system of inequalities by graphing Y<2-x Y>x+4
Thursday, October 20, 2011 by theo

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 by michal

trig
sinx=square root of 3 over 2, cosx=1 over 2 i want to find all six trigonometric functions
Wednesday, October 19, 2011 by fausto

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 by Parker

trig
50 feet
Monday, October 17, 2011 by ..

trig
cos 8 degrees fo feet 25 inches??
Monday, October 17, 2011 by ..

trig
if x=4 tan theta, express cos(2 theta) as a function of x
Monday, October 17, 2011 by Lisa

trig
find the exact values of the six trig functions of theta equals six pi divided by 8
Monday, October 17, 2011 by don

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 by Anonymous

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 by Anonymous

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 by Anonymous

trig
Two pilots take off from the same airport. Mason heads due south. Nancy heads 23Âº west of south. After 400 land miles, how far is Nancy from Masonâ€™s route? Round your answer to the nearest tenth of a mile. (Enter only the number.)(If someone had ...
Monday, October 17, 2011 by Parker

trig
A hill rises from the horizontal at 15Âº. 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 by Parker

Trig
Factor and simplify the expression. 1-sin^3 x
Sunday, October 16, 2011 by Amber

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 19Âº.
Sunday, October 16, 2011 by Parker

Trig
Find the exact value of tan 5pi/12 using the half-angle identity.
Saturday, October 15, 2011 by Cynthia

alg2/trig
Thursday, October 13, 2011 by jess

trig
evaluate cos 12*pi
Thursday, October 13, 2011 by rene

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 by David

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 by samuel r. edward

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 by JULIE

trig
Find the exact value by using a half-angle identity. cos 22.5 degrees
Tuesday, October 11, 2011 by Omar

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 by Ryan

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

trig
PERIMETER OF A RECTANGLE IS 32CM AND AREA IS 55CM FIND THE LENGHT.
Tuesday, October 11, 2011 by Anonymous

trig
Find tanx if sinx = 3/4 and x is in quadrant II.
Tuesday, October 11, 2011 by Amber

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 by yo

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 by Bridgette

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 by courtney

trig
I have to factor the expression and use fundamental identities: sins^2xcscx^2-sin^2x sec^4x-tan^4x
Friday, October 7, 2011 by Help pleaseee

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

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 by tiana

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 by Beth

trig
Solve for Â¥Ã¨ in the equation tan Â¥Ã¨ = 2.42 when 180Â¨Â¬ < Â¥Ã¨ < 360Â¨Â¬. Round your answer to the nearest tenth of a degree. (Enter only the number.)
Wednesday, October 5, 2011 by Parker

trig
Solve sin Â¥Ã¨ = -0.204 for 90Â¨Â¬ < Â¥Ã¨ < 270Â¨Â¬. Give your answer to the nearest tenth of a degree.
Wednesday, October 5, 2011 by Parker

trig
what is the hietgh difference between 2 walls 6 metres apart to get a 17.5 degree pitch
Tuesday, October 4, 2011 by Anonymous

trig
if cot 17 degrees = 3.2709, find tan 73 degrees
Tuesday, October 4, 2011 by james

trig
1-cos/1+cos= 2(cosec-cot)
Monday, October 3, 2011 by Aqib

trig
Find all solutions to the equation 2cos(2x) = x + 1, correct to 4 decimal places.
Sunday, October 2, 2011 by sam

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 by jaz

trig
Graph y=-2sin(x/2-pi/2)+3
Sunday, October 2, 2011 by Anonymous

trig
Question Part Points Submissions Used The angle of elevation to the top of a very tall Building is found to be 7Â° 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 by sanam

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 by Parker

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 by Dan

trig
Find all angles θ between 0Â° and 180Â° 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 by stellar

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

trig
All solutions in interval [0,2pi) of cosine theta plus one equals zero
Thursday, September 29, 2011 by Anonymous

trig
All solutions in interval [0,2pi) of cosine theta plus one equals zero
Thursday, September 29, 2011 by Anonymous

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 by Parker

trig
From a point 45 meters above level ground, a surveyor measures the angle of depression of an object on the ground at 68Â°. 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 by Anonymous

trig
Cos(2x+30)-Sin(3x-20)
Wednesday, September 28, 2011 by Anne

trig
Find a cofunction with the same value as sin 19 degrees
Tuesday, September 27, 2011 by Jessica

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

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 by zack

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 by zack

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 by Elle

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 by Rose

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 by Alexis

trig
P(2, 9) is a point on the terminal side of Ã¨ in standard position. What is the exact value of tan Ã¨?
Monday, September 26, 2011 by Parker

Trig
Given sin theta = -3/5 and 0 is in quad 2, find Cos theta and tan theta
Wednesday, September 21, 2011 by Betty

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 by Lauren

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 14Â°, and the angle of elevation to the top of the pole is 18Â°. Find her distance x from the pole. (Round your answer to one ...
Wednesday, September 21, 2011 by Dominic

TRIG
THE SIN COS SEC TAN COT CSC 5X+Y=0
Tuesday, September 20, 2011 by NAUDIA

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 by Hannah

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 by Ntombie

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 by ALISON

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 by ALISON

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 by Ali

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

Trigonometry
Solve. 2sin(2Æ’Ã†) + ÂÃ£3 = 0 interval [0, 2Æ’ÃŽ) How do I start this? I feel like maybe Trig Identities, but I'm not really sure.
Friday, September 16, 2011 by Josh

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 by ALISON

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 by josh

trig
find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3
Wednesday, September 14, 2011 by karen

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

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

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 by Jaclyn

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 by Samantha

trig
how do you factor completely.. 18x^2+3x-3?
Sunday, September 11, 2011 by Beth

trig
What's the general solution for 3sin^2x+sinxcosx=2
Saturday, September 10, 2011 by Piwokazi