Unit Circle Practice

Front

What is the radius of a unit circle?

Back

1

Front

What is the value of sin(π/4)?

Back

√2/2

Front

What is the value of cos(π/4)?

Back

√2/2

Front

In which quadrant is angle A if sin A < 0 and cos A < 0?

Back

III

Front

What is the value of sin(35π/4)?

Back

√2/2

Front

What is the definition of a 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 0 radians on the unit circle?

Back

(1, 0)

Front

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

Back

(0, 1)

Front

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

Back

(-1, 0)

Front

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

Back

(0, -1)