Unit Circle Practice (day 4)

Front

What is a complete circle in radians?

Back

2π

Front

What is half a circle in radians?

Back

π

Front

What is sin(90°) based on the unit circle?

Back

1

Front

What is the tan of 3π/2?

Back

Undefined

Front

What are the exact coordinates of 3π/4 on the unit circle?

Back

(−√2∕2, √2∕2)

Front

What is the value of cos(0°)?

Back

1

Front

What is the value of sin(180°)?

Back

0

Front

What is the value of tan(45°)?

Back

1

Front

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

Back

(0, 1)

Front

What is the value of cos(π)?

Back

-1