Unit Circle

Front

sin(30)=

Back

1/2

Front

cos(30^o)=

Back

√3/2

Front

cos(0^o)=

Back

1

Front

cos(90^o)=

Back

0

Front

sin(0^o)=

Back

0

Front

sin(120^o)=

Back

√3/2

Front

For what angles are sine and cosine the same? Options: 0^o, 45^o and 135⁰, 45^o and 225⁰, 45^o and 315⁰

Back

45^o and 225⁰

Front

What is the exact value of sin 210°?

Back

-1/2

Front

What is the exact value of cos 330°?

Back

√3/2

Front

What is the exact value of cos 135°? Options: √2/2, -√2/2, √3/2, -√3/2

Back

-√2/2