Basic Unit Circle

Front

What is the value of cos π/3?

Back

1/2

Front

What is the value of cos π?

Back

-1

Front

What is the value of sin π/6?

Back

1/2

Front

What is the value of tan 90°?

Back

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Front

What is the value of tan π/4?

Back

1

Front

Define the unit circle.

Back

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

Front

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

Back

(1, 0)

Front

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

Back

(0, 1)

Front

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

Back

(-1, 0)

Front

What are the coordinates of the point on the unit circle at 3π/2 radians?

Back

(0, -1)