March 4 Unit Circle Trig Values Review

Front

What is the value of cosine at 315 degrees?

Back

√2 / 2

Front

What is the value of cosine at 135 degrees?

Back

-√2 / 2

Front

What is the value of cos(5π/3)?

Back

1/2

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)?

Back

-1

Front

What is 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 are the coordinates of the point on the unit circle at 0 degrees?

Back

(1, 0)

Front

What is the sine value at 90 degrees?

Back

1

Front

What is the cosine value at 180 degrees?

Back

-1

Front

What is the sine value at 270 degrees?

Back

-1