Standard Unit Circle Review

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

The unit circle...

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

240°

• 2π/3
• 5π/6
• 4π/3
• 3π/4

4π/3 is equal to how many degrees?

• 60°
• 240°
• 300°
• 120°

For what angles are sine and cosine the same?

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

Where does an angle in standard form begin?

• Quadrant II, y-axis

• Quadrant IV, y-axis

• Quadrant III, x-axis

• Quadrant I, x-axis

• csc X

• cot X

• sec X

• tan X

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

• (0, 1)

Which trigonometric functions are POSITIVE in Quadrant II?

• All

• Tan, Cot

• Cos, Sec

• Sin, Csc