Unit circle

Front

cos(60°)

Back

1/2

Front

cos 150^o

Back

-√3/2

Front

sin 7π/6

Back

-1/2

Front

What is the radius of a unit circle?

Back

1

Front

What is the exact value of sin 150°?

Back

1/2

Front

Coordinates of 60° on the unit circle?

Back

(1/2, √3/2)

Front

sinθ is positive in

Back

the 1st and 2nd quadrants

Front

cosθ is positive in

Back

the 1st and 4th quadrants

Front

What is sin 45°?

Back

^√2/₂

Front

What is cos 90°?

Back

0