Unit Circle Coordinates

What is the radius of a unit circle?

• 1
• 2
• 1/2
• 0

What are the coordinates of 180° on the unit circle?

• 0, 1

• 1, 0

• -1, 0

• 0, -1

Tags

CCSS.5.G.A.1

What is the exact value of sin 150°

• $\frac{-1}{2}$

• $\frac{-\sqrt{3}}{2}$

• $\frac{1}{2}$

• $\frac{\sqrt{3}}{2}$

Tags

CCSS.HSG.SRT.C.7

 $\sin\left(\frac{7\pi}{6}\right)\ =$  

• 1/2

• -1/2

• √3/2

• -√3/2

Tags

CCSS.HSG.SRT.C.7

cos(60°)

• 0

• $\frac{1}{2}$

• $\frac{\sqrt{3}}{2}$

• 1

Tags

CCSS.HSG.SRT.C.7

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

• (0, 1)

• $\left(\frac{1}{2},\frac{\sqrt{3}}{2}\right)$

• $\left(\frac{\sqrt{3}}{2},\frac{1}{2}\right)$

• $\left(\frac{\sqrt{2}}{2},\frac{\sqrt{2}}{2}\right)$

Tags

CCSS.5.G.A.1

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

What is cos 90°?

• ½
• undefined
• 1
• 0

Tags

CCSS.HSG.SRT.C.7

What is tan 45°?

• 1
• ^√2/₂
• ^√3/₂
• ½

Tags

CCSS.HSF.TF.A.2

What is cos 30°?

• ^√3/₂
• ½
• ^√2/₂
• 1

Tags

CCSS.HSF.TF.A.3

CCSS.HSG.SRT.C.6