Unit Circle Practice

Front

What is the cosine of 4π/3?

Back

-1/2

Front

What is the sine of 2π/3?

Back

√3/2

Front

What radian measure corresponds to the point in the third quadrant?

Back

5π/4

Front

In which quadrant is 2π/3 located?

Back

II

Front

What terminal point corresponds to 3π/2?

Back

(0,-1)

Front

Define the unit circle.

Back

A circle with a radius of 1 centered at the origin of a coordinate plane.

Front

What is the relationship between radians and degrees?

Back

180 degrees = π radians.

Front

What are the coordinates of the point at π/2 on the unit circle?

Back

(0, 1)

Front

What is the sine of π/6?

Back

1/2

Front

What is the cosine of π/3?

Back

1/2