Unit Circle Practice

Front

What is the value of sin(120°)?

Back

√3/2

Front

What is the value of tan(3π/2)?

Back

Undefined

Front

What is the value of cos(π)?

Back

-1

Front

What is the value of cos(0°)?

Back

1

Front

What is the value of csc(4π/3)?

Back

2/√3

Front

Define the unit circle.

Back

A circle with a radius of 1 centered at the origin of a coordinate plane, used to define trigonometric functions.

Front

What is the sine of an angle in the unit circle?

Back

The y-coordinate of the point on the unit circle corresponding to that angle.

Front

What is the cosine of an angle in the unit circle?

Back

The x-coordinate of the point on the unit circle corresponding to that angle.

Front

What is the tangent of an angle in the unit circle?

Back

The ratio of the sine to the cosine of that angle (tan(θ) = sin(θ)/cos(θ)).

Front

What are the coordinates of the point at 90° on the unit circle?

Back

(0, 1)