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37 Answered Questions for the topic Unit Circle

Unit Circle Math Calculus

04/20/20

On a unit circle, what is sin θ for coordinates (√2/2, -√2/2)?

Unit Circle Math Precalculus

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
Unit Circle Math Precalculus

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°  

07/26/17

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

04/28/17

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
Unit Circle Algebra 2 Trigonometry

03/27/17

UNIT circle question

An equilateral triangle is inscribed in the unit circle. find the exact perimeter of the equilateral triangle.
Unit Circle Algebra 2 Perimeter

03/27/17

Equilateral triangle UNIT circle

An equilateral triangle is inscribed in the unit circle. find the exact perimeter of the equilateral triangle.
Unit Circle Algebra 2 Radians

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
Unit Circle Algebra 2 Trigonometry

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
Unit Circle Trigonometry

06/10/16

Solve sec^2 theta= sec theta+2 using exact values over the following domains

=-2pi<=x<2pi =the real numbers

06/06/16

You have been asked to explain, using words how the equation for the unit circle is derived.

Direct this explanation to someone who has studied the pythageron therom
Unit Circle Trigonometry

06/06/16

Determine the coordinates of P for each of the following points.

Point P(θ) is at the intersection of the unit circle and the terminal arm of angle θ   1.5π/6 2. P(5π/3) 3.P(-5Π/4)
Unit Circle Trigonometry

06/06/16

following points all lie on the unit circle. Determine each unknown value

-7/9 ,y ,quad 3 (1, y) x,3/4,quadrant 2
Unit Circle Algebra 2 Trigonometry

05/13/16

If sin(theta)=-.95, find theta when 0(is less than or equal to)theta(is less than or equal to)2pi

If sin(theta)=-.95, find theta when 0(is less than or equal to)theta(is less than or equal to)2pi without solving by graphing.
Unit Circle

12/14/15

How do you find cot of 180 degrees?

This is a unit circle problem and please include the steps to solve the problem. 
Unit Circle

12/14/15

How do you find sec of pi/4?

This is a unit circle problem and please include the steps to solve it in the answer.
Unit Circle

12/14/15

How do you find sin of 3pi/2?

This is a unit circle problem and will whoever answers please include a step by step process on how to solve it?
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