Sine Cosine Degrees Unit Circle

What is the radius of the unit circle?

• 2

• 3

• 2/3

• 1

Based on your unit circle cos(0^o)=

• 1

• 0

• -1

• 1/2

Based on your unit circle sin(90^o)=

• 1/2

• 0

• -1

• 1

What is the value of sine at 210°?

• 1/2

• -1/2

• √3 / 2

• -√3 / 2

sin(5π/3)=

• 1/2

• -√3/2

• √3/2

• -1/2

sin(3π/2)

• 0

• 1

• -1

• 1/2

What is the value of cosine at 135°?

• 0

• 1/2

• √2 /2

• -√2 /2

Identify the Positive angle in both radians and degrees that represent point H.

Identify the Positive angle in both radians and degrees that represent point D.

Identify the Positive angle in both radians and degrees that represent point L.