Unit Circle And Trigonometry

Front

What is the reference angle for -125°?

Back

55°

Front

In which quadrant would you find an angle measuring -740°?

Back

4

Front

What are the coordinates of 60° on the unit circle?

Back

(1/2, √3/2)

Front

What is the radius of a unit circle?

Back

1

Front

Back

0

Front

Define a unit circle.

Back

A circle with a radius of 1 centered at the origin (0,0) in the coordinate plane.

Front

What is the sine of 30°?

Back

1/2

Front

What is the cosine of 45°?

Back

Front

What is the tangent of 60°?

Back

Front

How do you find the reference angle for any angle?

Back

Subtract the angle from 180° if it's in the second quadrant, or from 360° if it's in the fourth quadrant.