271 Answered Questions for the topic Trigonometric Functions

12/07/15

#### Find the angle x such that 0 is less than or equal to x which is less that 2pi. cos(2x)= =2-2sin^2x

Find the angle x such that 0 is less than or equal to x which is less that 2pi. cos(2x)= =2-2sin^2x

12/07/15

#### HELP!! given sin(x)= -3/5, pi<x<3pi/2; cos(y)= 12/13, 3pi<y<2pi find exact value of:

given sin(x)= -3/5, pi<x<3pi/2; cos(y)= 12/13, 3pi<y<2pi find exact value of:   a) sin(2x)   b) cos(y/2)

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)

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?

11/19/15

#### verify the idenitity

sin(2x) - cos(2x) = sinx(sinx + 2cosx) - cos^2x

11/19/15

1-sin^2x

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)

11/19/15

#### Cosine trigonometry

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

11/18/15

tanx * cscx

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)=?

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

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

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

09/04/15

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.

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

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

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

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

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

08/14/15

#### Solve for x

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

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

08/14/15

#### Prove the following trigonometric identities:

a) 1+cos2x=2cos2x   b) csc2[(PIE/2)-x]-1=tan2x

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