12-9 Unit Circle Practice

Front

What is the sine of 7π/6?

Back

-1/2

Front

Why is the unit circle called the unit circle?

Back

Because its radius is equal to one.

Front

What is the sine of 180°?

Back

0

Front

What is the cosine of 180°?

Back

-1

Front

What is the tangent of -π?

Back

0

Front

What is the radius of the unit circle?

Back

1

Front

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

Back

(0, 1)

Front

What are the coordinates of the point at 270° on the unit circle?

Back

(0, -1)

Front

What is the cosine of 0°?

Back

1

Front

What is the sine of 90°?

Back

1