Unit Circle Quiz

cos(60°)

• 0

• 1/2

• √3/2

• 1

cos 150^o

• -1/2

• 1/2

• √3/2

• -√3/2

sin 7π/6

• 1/2

• -1/2

• √3/2

• -√3/2

What is the radius of a unit circle?

• 1

• 2

• 1/2

• 0

What is the exact value of sin 150°

• -1/2

• -√3/2

• 1/2

• √3/2

Tags

CCSS.HSF.TF.A.2

What are the coordinates of 60° on the unit circle?

• (0, 1)

• (1/2, √3/2)

• (√3/2, 1/2)

• (√2/2, 1/2)

sinθ is positive in

• the 1st and 2nd quadrants

• the 1st and 3rd quadrants

• the 1st and 4th quadrants

• the 2nd and 3rd quadrants

Tags

CCSS.HSF.TF.A.2

cosθ is positive in

• the 1st and 2nd quadrants

• the 1st and 3rd quadrants

• the 1st and 4th quadrants

• the 2nd and 3rd quadrants

cos 4π/3

• -√3/2

• √3/2

• 1/2

• -1/2

cos(5π/3)

• -√2/2

• -1/2

• 1/2

• √3/2