296 Answered Questions for the topic Trigonometric Functions

Trigonometric Functions Trigonometry Trigonometric Formulas

12/07/15

Use sum, difference, product, sum to product, product to sum or half angle formulas to find the exact value of each expression.
a) sin50cos10+sin10cos50=   b)sin75+sin15=   c) sin105=   d) sin(5pi/24)cos(pi/24)
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Trigonometric Functions Trigonometry Pre Calculus

11/22/15

How to deal with trigonometry in application?
A utility pole is anchored to level ground by two 53 ft wires, one on each side of the pole. The wires make a 65 (degree) angle with the ground below. How far apart along the ground are the wires?
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Trigonometric Functions

11/19/15

verify the idenitity
sin(2x) - cos(2x) = sinx(sinx + 2cosx) - cos^2x 
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Trigonometric Functions

11/19/15

Rewrite in terms of cosine only using proof
 1-sin^2x 
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Trigonometric Functions

11/19/15

single trigonometric function: sin(x + y) - sin(y) cos(x) / cox(x) * cos(y)
simplify o a single trigonometric function:sin(x + y) - sin(y) cos(x) / cox(x) * cos(y)
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Trigonometric Functions Math Precalculus Trigonometry

11/19/15

Cosine trigonometry
Assume 0 ≤ θ ≤ πIf cos(θ) = 1, What is csc(θ)? cot(θ)?
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Trigonometric Functions

11/18/15

Simplify Single Trigonometric function: tanx * cscx
tanx * cscx 
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Trigonometric Functions

11/16/15

Find the exact values of each of the remaining trigonometric functions of theta.
sec(theta)=2, tan(theta)>0.   Answers:   1. sin(theta)=? 2.cos(theta)=? 3.tan(theta)=? 4.csc(theta)=? 5.cot(theta)=?
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Trigonometric Functions Math Trigonometry

11/11/15

If cos 4 = -2/3 and cot theta > 0, Find the other trigonometric functions of theta.
Hello guys, I've been having trouble with trigonometry, so I have this problem, we haven't discussed it yet that much so I'm puzzled. I'd be much appreciate if you write the process, it doesn't... more
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Trigonometric Functions Cosine

11/10/15

Find all six trigonometric function values given cos x=7/12 and 3pi/2<x<2pi
need help solving
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Trigonometric Functions

11/09/15

Trig question: find all solutions
2cos²4Θ + 2sin4Θ = 1 Find all solutions 0 ≤ x < 360º If necessary, round to nearest tenth degree   I keep substituting cos²Θ with (1 - sin²θ).. simplifying more.. doing quadratic formula... more
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Trigonometric Functions

09/29/15

giving sin x = .2659 and cos x = .8467 find the exact value for sin(x+theta) between 0 and pi/2
giving sin x = .2659 and cos x = .8467 find the exact value for sin(x+theta) between 0 and pi/2
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Trigonometric Functions

09/19/15

Assume that the range of f(x) = arccsc(x) is [0, pi/2) U [p, 3pi/2) when finding the exact value of the following of arccsc(-2) in radical fraction form.
Answer this now!
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Trigonometric Functions

09/04/15

If sin(?) = - 1/3 with ? in Quadrant III, what is cos(?)?
PLEASE! I NEED THE ANSWER!
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Trigonometric Functions

08/18/15

Find the Exact Value
Find the exact value of [sec(pi/4)cos(2pi/3)]/[tan(pi/6)/csc(3pi/4)]. You must have exact values, no decimals. 
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Trigonometric Functions

08/18/15

Angles A and B are located in the first quadrant. If sinA=5/13 and cosB=3/5, determine the exact value of cos(A+B)
Angles A and B are located in the first quadrant. If sinA=5/13 and cosB=3/5, determine the exact value of cos(A+B). Show your work
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Trigonometric Functions

08/17/15

Solve the following trigonometric equations
Solve the following trigonometric equations for 0≤θ≤2π. Answers must be exact values. a)√2 sin2θ=1   b)2csc2θ-8=0
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Trigonometric Functions

08/17/15

Use a compound angle formula to determine an exact value of sin 7p12
Use a compound angle formula to determine an exact value of sin 7π12
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Trigonometric Functions

08/17/15

Consider the graph of y = sec2x - 1
a) How has this graph been transformed from the graph of y = secx? State the period of y = sec2x - 1  b) Determine the domain and range of y = sec2x - 1
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Trigonometric Functions

08/17/15

Write an Equation
An object suspended from a spring is oscillating up and down. The distance from the high point to the lowpoint is 45 cm, and the object takes 4 s to complete 5 cycles. For the first few cycles, the... more
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Trigonometric Functions

08/14/15

Solve for x
a) cos2 x + sin x - 3 = 0, XE[0,2PIE] b)2cos2x-1=0, XE[0, PIE]
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Trigonometric Functions

08/14/15

Write an Equation
Sarah is riding a ferris wheel. She gets on at the bottom of the ride 1 m above the ground. Exactly one minute later, she has rotated 3/4 of a rotation, and she is 9 m above the ground. Write an... more
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Trigonometric Functions

08/14/15

Prove the following trigonometric identities:
a) 1+cos2x=2cos2x   b) csc2[(PIE/2)-x]-1=tan2x    
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Trigonometric Functions Multiple Choice

08/03/15

Find the value of the trigonometric function sin (t) if sec(t)=-4/3 and the terminal side of angle t lies in quadrant II.
a. sin(t)=3/4 b. sin(t)=(√7)/4 c. sin(t)=5/4 d. sin(t)=(√5)/4
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Trigonometric Functions Trigonometry

07/22/15

For tirangle KOR with side lengths k, o and r, which equation can be to determine o?
o=√r^2+k^2-2rkcosO o=√r^2-k^2-2rksinO
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