The Unit Circle

What is the value of sine at 150

• 0

• 1/2

• 1

• √3 / 2

sin 7π/6

• 1/2

• -1/2

• √3/2

• -√3/2

Identify the positive angle in both degrees and radians that represent point L.

What is the radius of a unit circle?

• 1

• 2

• 0

Select ALL that apply: Which of the following is a point on the unit circle?

• (1, 1)

• (-1, 0)

• (0, 1)

• (1, 0)

• (0, -1)

• (-1, 0)

When drawing a right triangle from any point on the unit circle to the x-axis, the hypotenuse is equal to one.

• True

• False

Name the angle indicated by the graph in both degrees and radians.

• I

• II

• III

• IV

What is 7π/4 radians in degrees?

• 300

• 135

• 315

• 45