Unit Circle

Front

Value of cosine at 0

Back

1

Front

Value of sine at 30°?

Back

1/2

Front

What is the radius of the unit circle?

Back

1

Front

Value of cosine at 135°?

Back

-√2 /2

Front

Value of cosine at 270°?

Back

0

Front

Value of sine at 330°

Back

-1/2

Front

Value of cosine at 315°?

Back

√2 / 2

Front

Value of sine at 150°?

Back

1/2

Front

cos(60°)

Back

1/2

Front

sin π/4

Back

√2∕2