5/9 Bell Ringer

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 exact value of sin 150°

• -1/2
• -√3/2
• 1/2
• √3/2

sinθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

cosθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

What is sin 45°?

• 1
• ^√3/₂
• ½
• ^√2/₂

What is cos 90°?

• ½
• undefined
• 1
• 0

What is tan 45°?

• 1
• ^√2/₂
• ^√3/₂
• ½

What is cos 30°?

• ^√3/₂
• ½
• ^√2/₂
• 1