Alg2 Trig Review

sin 0 =

• 0

• ¹/₂

• ^√2/₂

• ^√3/₂

• 1

cos π =

• 0
• 1
• -1 
• undefined

Based on the unit circle, what is the value of sin?

• y

• x

• x/y

• y/x

Using the Unit Circle, find the exact value of this trig function.

• 1

• 0

• -1

• undefined

• The correct answer is not listed

sinθ is positive in

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

cos 150=?

What is the reference angle for 240 degrees?

• 60 degrees
• 30 degrees
• 45 degrees
• 210 degrees

Which function corresponds to y coordinate on the unit circle?

• sine

• cosine

• tangent

• secant

• -1

• 1

• 0

• undefined