45 Answered Questions for the topic Unit Circle

Unit Circle Trigonometry Maths

05/17/21

Cos theta = -1/2 and sin theta = -1/2

Calculate all values of theta on unit circle: when cos theta = -1/2 ; and also when sin theta = -1/2

05/12/21

Let sin(x)= -4/5 in quadrant 4 and let tan(y)= -5/12 in quadrant 2

Find sin (x-y)Find cos (x+y)Find cos (x/2)Find tan (2x)Find cos (2y)
Unit Circle Trigonometry

05/01/21

Please help with answer

The terminal side of angle θ in standard position lies on the line 4y +3x = 0 inQuadrant II. Find all six trigonometric functions of θ .
Unit Circle Trigonometry

05/01/21

PLEASE HELP ANSWER

Find all angles θ , where - 2π < θ < 0, such that tan θ = sqrt3/3 . Find all angles θ , where 360° < θ < 720°, such that sec θ = −2 and csc θ > 0.

12/07/20

What is the max. temperature (Celsius) that occurs on the second day?

f(t) = 18-4cos(π/12(t+1))t stands for the hour

10/17/20

Trigonometry problem (Unit Circle). Please help!

Given that -1/3 is the x - coordinate of the trigonometric point of an angle, what is P( 𝝅 - 𝜽)?

11/22/19

Plot the Polar Coordinates

Plot the Points with polar coordinates (-6,-π/6) and (2, 3π/2). Plot on the Unit Circle.Small320×320Please help! I'm just not understanding this. Please explain! Thank you!

04/11/19

Trigonometric Equations

Using inverse trigonometric functions, find a solution to the equation  cos(x)=.7 in the interval 0 to 4pi. Then, use a graph to find all other solutions to this equation in this interval. Enter... more

10/07/18

how would I solve for csc theta = 2.3 on my calculator and get an answer in degrees?

cscΦ = 2.3   How would I find theta in degrees using my graphing calculator. Would I just use sin on both sides to cancel out theta or would I have to do something else?
Unit Circle

09/21/18

The cos of 3pi/4

Typed like on a computer 
Unit Circle

09/08/18

tan(θ)=−1 and sec(θ)<0. Which of the following can be the angle θ?

 this question for my pre-cal class and Im having a hard time understanding it and don't know where to start from can you help me please?
Unit Circle Trigonometry

09/01/18

tan(-20)= -tan(20). Why?

In two or more complete sentences, use your knowledge of the unit circle to describe why the following trigonometric equation is true.tan(-20°) = -tan(20°)
Unit Circle

07/16/18

Evaulate:- sec 690

Unit Circle I have doubt evaulate:- - sec690°  

Find the area of the sector to the nearest square root

A sprinkler is designed to rotate 360 degrees clockwise, and then 360 degrees counterclockwise to water a circular region with a radius of 12 feet. The sprinkler is located in the middle of the... more

Need help solving this math problem with trigonometric functions :)

Suppose the terminal point determine by t lies in the second quadrant and is (-24/25, y).   (a) Find y.   (b) Find the value of the 6 trigonometric functions at 837π + t   I believe the... more

03/27/17

UNIT circle question

An equilateral triangle is inscribed in the unit circle. find the exact perimeter of the equilateral triangle.

03/27/17

Equilateral triangle UNIT circle

An equilateral triangle is inscribed in the unit circle. find the exact perimeter of the equilateral triangle.

03/27/17

Trig question help

A snowboarder does tricks and names them by their degrees. convert their spins to radians.  A) "I just performed a Cab540" b) "did you see that Niki Huwlyer landed a quintuple cork 1980?" c)... more

03/27/17

Trig problem

Evaluate sin(sin-1(sin60)) [60 degrees]   and    evaluate cos-1(cos(cos-10.5)) if the angle is in quadrant 1. 
Unit Circle Trigonometry Tangent

03/12/17

How do I find the exact value of this trigonometric function?? I know y/x but how do I simplify it?

tan5(*pie symbol)/ 6     
Unit Circle

10/12/16

Austin takes 1 minute and 45 seconds to run three-quarters of a circular track. His rate of motion is pi /____ radians per second.

I can't figure out how to convert this to the answer format they want.  I know that 3π/2 is the position on the circle and I converted the time to 105 seconds.  I don't know what to do next.

Trig questions regrading exact values and quadrants

The solution to the trig equation 4cos theta +3 =0 are in which quadrant?   Given csc theta = 2 sqrt3/3 and -270 degrees < theta <180 degrees Determine the exact values of... more

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