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30 Answered Questions for the topic Trigonometry Functions

Trigonometry Functions Trigonometry Trigonometry Identities

06/27/20

find sin theta, given sec theta= 4/3 and tan theta<0

I know that theta must be in the fourth quadrant but I am lost on what identities to use for solving sin theta.
Trigonometry Functions Math Trigonometry

02/20/19

If two angles in the ration of 5:4 are represented by 5x and 4x, express each of the following statements as an equation; then find x and the angles.

A. The angles are adjacent and together form an measuring 45 degrees B. The angles are complementary C. The angles are supplementary D. The angles are two angles of a triangle whose third angle is... more
Trigonometry Functions

05/26/18

Why do sine waves cycle between 1 and -1?

In the sine function y=sin(x), why does the sinusoid travel between 1 and -1
Trigonometry Functions Trigonometry Trigonometric Identities

04/24/18

How to find coordinates on terminal arm

The angle theta is in the first quadrant and sin of theta = 2/sqrt(13) determine the possible coordinates for point P on the terminal arm
Trigonometry Functions

03/01/18

Find x, sin((2x+3))=cos((x-12))

I am doing study island and am stuck on this problem. I have to find X.
Trigonometry Functions Precalculus Trigonometry

12/14/17

The function f(x)= sin x + cos x can be written in the form f(x)= A sin (Bx + C). Find A, B, and C.

A table might help
Trigonometry Functions Trigonometry Trigonometric Functions

12/09/17

Sinusoidal functions (wave problem)

The depth of water in a certain area can be estimated by using this equation:   h(t)=-4.3cos(pi/6.35(t+1.6))+8.4   A boat requires a depth of 7.2 m to ensure safe passage into the area. The... more
Trigonometry Functions Math Calculus

10/19/17

(tanθ+cotθ)^2=sec^2θ csc^2θ

Proving identities
Trigonometry Functions Trigonometry

08/23/17

If you are given 3 sides of a triangle, explain how you would find all three angles?

If you are given 3 sides of a triangle, explain how you would find all three angles?
Trigonometry Functions Trigonometry

08/23/17

trigonometry question?

Kevin is riding a mini Ferris wheel. He reaches the maximum height of 9m at 5s and then reaches the minimum height of 1m at 65s. a.What is the period (the length of time to complete one cycle)?... more
Trigonometry Functions Trigonometry

08/07/17

Find all exact solutions on [0, 2π). (Enter your answers as a comma-separated list.)

tan(x) − 2 sin(x) tan(x) = 0
Trigonometry Functions Trigonometry

08/07/17

If tan(x) = −2 and x is in quadrant IV, find the exact values of the expressions without solving for x.

A) sin(2x) B)cos(2x) c) tan(2x)
Trigonometry Functions Trigonometry Cosine

08/07/17

If sin(x) = 1/8 and x is in quadrant I, find the exact values of the expressions without solving for x.

If sin(x) = 1/8 and x is in quadrant I, find the exact values of the expressions without solving for x.   a) sin(2x) b) cos(2x) c) tan(2x)
Trigonometry Functions

02/27/17

Trigonometry sin^3(x) + cos^3(x) * tan(x)

Let f(x) = sin3x + cos3x (tan x)   Show that f(x) = sin x   Thank you for your time!
Trigonometry Functions Trigonometry Angles

03/10/16

TRIGONOMETRY - functions & angles in standard position

Find the value of cos (angle) in (angle) is in standard position and the point (5,-12) is on the terminal side of (angle).  b) -5/13 c) 5/13 The correct answer is C, but I chose B. Why is the... more
Trigonometry Functions Transformations

10/29/15

Describe the transformations

Describe the transformations that have taken place for the graph g(x)=cosx to become the graph h(x)=-2cos(pi*x + pi/4).  
Trigonometry Functions Trigonometry Trigonometry Identities

10/24/15

Express cos4x as a trig function of x

Using only the double angle identities how to solve for this? im stucked after 2cos^2 (2x) -1
Trigonometry Functions Trigonometry

07/15/15

solutions of the equation that are in the interval [0, 2p).[cot2 ? +sqrt3cot ? = 0 ]

trig problem using the unit circle for
Trigonometry Functions

07/08/15

Trigonometry

Given that  cosθ=-4/√53 and that the terminal side is in quadrant II, find the length of the third leg and  the other five trigonometric function values.
Trigonometry Functions Trigonometry Trignometric Functions

06/18/15

find the value of k

if tan ( Arc cos (square root of 3)/k) =(square root of 3)/3 then k is?   the square root is only on 3, in both cases, not on the 3 on the bottom or k on the bottom.
Trigonometry Functions Math Trigonometry

06/10/15

Maths questions On Trigonometry and functions....

If 0≤α≤π and 0≤β≤π meets α+β=2/3π and sin α=2sinβ,the value of tan(α-β)=...A.1B.square root 2C.2-(square root 3)D.square root 3E.2+(square root 3)A function f(x)=4x^3-18x^2+15x-20 is maximum on... more
Trigonometry Functions Trigonometry

05/14/15

Determine which of the following does NOT represent an angle co terminal...

Determine which of the following does NOT represent an angle co terminal with the given angle θ= 5π/8?   a) -13π/8   b) 21π/8   c) 37π/8   d) -11π/8    
Trigonometry Functions Trigonometry Trigonometry Word Problems

04/15/15

The height above the surface of the water, h, in centimeters, of a certain spot on a paddle of a miniature river boat is modeled by h(t) = 5.5cos(72t) +35

where t is the time in second since the boat started moving.    A) What are the maximum and minimum height of the spot on the paddle?  B) What is the speed of the rotation?  C) How long does it... more
Trigonometry Functions Trigonometry Equations

04/13/15

Determine the point(s) of intersection of f(theta) = 8sec(2theta) + 4, and g(theta) = 5sec(2theta) - 11 that lie on the interval 0 - 360 degree.

It was on my grade 11 math test, a thinking question, and our teacher never gave answers for it. I'm worried it will be a question for the exam. I'm not sure how to go about it, other than making... more
Trigonometry Functions

09/16/14

write 2 linear functions : one to model a cost that the business has and the other to model the revenue of the business

the template of the model might look something like this: revenue= (amount off each customer)(number of customers) Cost=(cost created by each customer)(number of customers) + (some flat cost... more
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