Unit Circle Quiz Review

The unit circle...

• Has center at (1,1)
• Has a circumference of 1
• Has a diameter of 1
• Has a radius of 1

For what angles are sine and cosine the same?

• 0^o
• 45^o and 135⁰
• 45^o and 225⁰
• 45^o and 315⁰

cos 5π/6

• -1/2
• 1/2
• √3/2
• -√3/2

What the coordinates of 270° on the unit circle?

• 0, 1
• 1, 0
• -1, 0
• 0, -1

What is a complete circle in radians?

• π
• 2π
• 1/2 π
• 1

4π/3 is equal to how many degrees?

• 60°
• 240°
• 300°
• 120°

• csc X

• cot X

• sec X

• tan X

What are the coordinates of 60^o on the unit circle?

• (0, 1)

cos 4π/3

• -√3/2
• √3/2
• 1/2
• -1/2

tan 7π/4

• -1
• 1
• √2/2
• undefined