Unit Circle Trig

Front

What is the value of sin(π/2)?

Back

1

Front

What is the angle measure, in degrees, at the red marking on the unit circle?

Back

45°

Front

What is the value of cos(π/4)?

Back

√2/2

Front

What is the value of cos(π)?

Back

-1

Front

Find cos(600°).

Back

-1/2

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 sine and cosine on the unit circle?

Back

sin(θ) = y-coordinate, cos(θ) = x-coordinate of the point on the unit circle.

Front

What is the value of sin(0°)?

Back

0

Front

What is the value of cos(0°)?

Back

1

Front

What is the value of sin(30°)?

Back

1/2