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December 10, 2016

Homework Help: Math: Trigonometry

Recent Homework Questions About Trigonometry

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 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 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 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 by Parker

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 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 19º.
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
The expression a/a-b + b/b-a is equivalent to a) 1 b)-1 c) ab/a-b d)a+b/a^2-b^2 please help!
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 ¥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 by Parker

trig
Solve sin ¥è = -0.204 for 90¨¬ < ¥è < 270¨¬. 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 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 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 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 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 = 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 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 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 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 è in standard position. What is the exact value of tan è?
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 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 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(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 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

trig
2x+5y+3=0 what is the value of sin theta
Saturday, September 10, 2011 by Anonymous

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 by hanna tret

trig
tan ø = 5; Quad I How do I find the other 5 function values?
Friday, September 9, 2011 by Michelle

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 by ALISON

trig
find a value of interval in degrees cotalpha=1.3692847 alpha=0.023903 is that correct?
Tuesday, September 6, 2011 by ALISON

Trig
Using tables or a calculator, find tan 16 degrees 15 + cot 32.7 degrees to the nearest hundreths
Tuesday, September 6, 2011 by Alyson

trig
find the value of alpha cotalpha=1.3692847 is 0.023903 correct?
Tuesday, September 6, 2011 by ALISON

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

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 by ALISON

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 by ALISON

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 by hails

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 by hails

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 by Sheila

trig
log(x-15)-2=-logx
Tuesday, September 6, 2011 by Sara

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Homework Help: Math