LT 17.3 Unit Circle

What is the radius of a unit circle?

• 1
• 2
• 1/2
• 0

Tags

CCSS.HSF.TF.A.2

What is a complete circle in radians?

• π
• 2π
• 1/2 π
• 1

Tags

CCSS.HSF.TF.A.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

Tags

CCSS.HSF.TF.A.4

CCSS.HSF.TF.A.3

CCSS.HSF.TF.C.8

cos (π/6)

• √3/2
• √2/2
• 1/2
• 1

Tags

CCSS.HSF.TF.A.2

cos (π/4)

• √3/2
• √2/2
• 1/2
• 1

Tags

CCSS.HSF.TF.A.2

cos 5π/6

• -1/2
• 1/2
• √3/2
• -√3/2

Tags

CCSS.HSF.TF.A.2

cos(π)=

• 0
• 1
• -1
• 1/2

Tags

CCSS.HSF.TF.A.2

cos 4π/3

• -√3/2
• √3/2
• 1/2
• -1/2

Tags

CCSS.HSF.TF.A.2

cos(5π/4)

• -1/2
• √3/2
• √2/2
• -√2/2

Tags

CCSS.HSF.TF.A.2