Unit Circle

Front

What is the value of tan(-π)?

Back

0

Front

What is the value of cos(0)?

Back

1

Front

In which quadrants is tanθ positive?

Back

The 1st and 3rd quadrants.

Front

What is the value of sin(7π/6)?

Back

-1/2

Front

What is the value of cos(4π/3)?

Back

-1/2

Front

What is the definition of 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 at 90 degrees on the unit circle?

Back

(0, 1)

Front

What are the coordinates of the point at 180 degrees on the unit circle?

Back

(-1, 0)

Front

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

Back

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

Front

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

Back

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