unit circle review

Based on your unit circle sin(90^o)=

• 1/2
• 0
• -1
• 1

What is the exact coordinates of  3π/4 on the unit circle?

• (−√2∕2, √2∕2)
• (−√2∕2, −√2∕2)
• (−√3∕2, −√2∕2)
• (√2∕2, −√2∕2)

At θ = 30°, what is the equivalent angle measure in radians?

• π/2
• π/3
• π/4
• π/6

cot π/2

• undefined
• 0
• 1
• 1/2

Which quadrant is angle -13π/4 in?

• Quadrant I
• Quadrant II
• Quadrant III
• Quadrant IV

360° is equal to how many radians?

• π/2
• π
• 2π
• πr²

csc 330⁰

• 2

• -2

• √2

• -√2

Find the co-terminal angle to 150^o

• 510

• 210

• 550

• -300

*

• csc x
• sec x
• cot x
• tan x

*

• csc x
• sec x
• cot x
• tan x