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