The Unit Circle Review

Conversions

100

Convert 200 degrees to radians

(10pi)/9 radians

200

Convert 50 degrees to radians

(5pi)/18 radians

300

Convert

pi/12

 radians to degrees

15°

400

Convert 16 radians to degrees

916.73°

or 

2880/pi

500

convert 20𝝅 degrees to radians

What is 𝝅²/90 radians

Unit Circle (Degrees)

100

sin 150

1/2

200

cos 270

0

300

tan 210

sqrt3/3

400

tan 480

-√3

500

sec 420

2

Unit Circle (Radians)

100

sin 4π/3

-√3/2

200

cos 5π/6

-√3/2

300

tan 11π/6

-sqrt3/3

400

cos((-2pi)/3)

-1/2

500

csc((7pi)/6)

-2

Reference Angles

100

What is the reference angle of 30 degrees?

30 degrees

200

What is the reference angle for 315 degrees?

45 degrees

300

What is the reference angle for 

(7pi)/4

pi/4

400

What is the reference angle for 

(17pi)/6

pi/6

500

What is the reference angle of -480 degrees?

60 degrees

Misc

100

What two quadrants is tangent positive?

Quadrants I and III

200

What quadrant is cosine positive and sine is negative?

IV

300

What two Quadrants is sine negative?

III and IV

400

A positive angle that is any angle's quickest way back to the x-axis is called the _________

reference angle

500

Name two Pythagorean Triples

There are lots of possibilities