Unit Circle

Front

What is the value of cos(π/4)?

Back

√2/2

Front

What is the value of sin(7π/6)?

Back

-1/2

Front

In which quadrant is -2π/3 located?

Back

III

Front

What is the value of sin(2π/3)?

Back

√3/2

Front

What is the value of sin(0)?

Back

0

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 π/3 on the unit circle?

Back

(1/2, √3/2)

Front

What is the relationship between sine and cosine on the unit circle?

Back

For any angle θ, sin(θ) is the y-coordinate and cos(θ) is the x-coordinate of the point on the unit circle.

Front

What is the value of cos(π)?

Back

-1

Front

What is the value of sin(π/2)?

Back

1