5/4 Assignment

Front

What is the reference angle for -30°?

Back

30°

Front

What is half a circle in radians?

Back

π

Front

What is the radius of the unit circle?

Back

1

Front

What is the reference angle?

Back

The reference angle is the acute angle formed by the terminal side of an angle and the x-axis.

Front

What are the coordinates of 180° on the unit circle?

Back

-1, 0

Front

What is the value of π in degrees?

Back

180°

Front

How do you convert degrees to radians?

Back

Multiply by π/180.

Front

What is the value of 90° in radians?

Back

π/2

Front

What is the relationship between radians and degrees?

Back

180° is equal to π radians.

Front

What is the reference angle for 150°?

Back

30°