Unit Circle

sin π/4

• √2∕2
• 1/2
• √3/2
• 0

cos 4π/3

• -√3/2
• √3/2
• 1/2
• -1/2

sin 7π/6

• 1/2
• -1/2
• √3/2
• -√3/2

What is the value of cosine at 135

• 0
• 1/2
• √2 /2
• -√2 /2

What is the value of sine at 210?

• 1/2
• -1/2
• √3 / 2
• -√3 / 2

tan 270

• 0
• 1
• -1
• undefined

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)

What the coordinates of 180° on the unit circle?

• 0, 1
• 1, 0
• -1, 0
• 0, -1

4π/3 is equal to how many degrees?

• 60°
• 240°
• 300°
• 120°

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

• π/2
• π/3
• π/4
• π/6