278 Answered Questions for the topic Trigonometric Functions

Trigonometric Functions Cosine

01/28/16

#### Trigonometric equations

if inverse cosine of x + inverse cosine of y = pi/2 show that x^2 + y^2 = 1
Trigonometric Functions Word Problem

01/19/16

#### Trig question

If f(x)=x^2    Find:     f(x+h)-f(x-h)                -------------------?(that's a fraction btw)                       2h   Please help!! Iv'e tried to solve this for forever:(
Trigonometric Functions Word Problem

01/19/16

#### Word problem

Write the following equation in double intercept form: 2x-6y-3=0
Trigonometric Functions

12/15/15

#### Find the exact value of each trigonometric ratio: A. sin30 B. cos240 C. tan150

Confused with special triangles... do these values even involve special triangles?
Trigonometric Functions Word Problem

12/10/15

#### Write the inverse....

Write the inverse of the following function. Y=4x+2/3
Trigonometric Functions Word Problem

12/10/15

#### Trig question

A student solves the inverse sine function and gets 330 ° for an answer. Is it correct? Why or why not?
Trigonometric Functions Trigonometry Trigonometric Formulas

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
Trigonometric Functions Trigonometry Trigonometric Formulas

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)
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)
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?
Trigonometric Functions

11/19/15

#### verify the idenitity

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

11/19/15

#### Rewrite in terms of cosine only using proof

1-sin^2x
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)
Trigonometric Functions Math Precalculus

11/19/15

#### Cosine trigonometry

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

11/18/15

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

tanx * cscx
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)=?
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
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
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
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
Trigonometric Functions

09/04/15

#### If sin(?) = - 1/3 with ? in Quadrant III, what is cos(?)?

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.
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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