Trig/Unit Circle

Front

What are the coordinates of 60° on the unit circle?

Back

(1/2, √3/2)

Front

On the unit circle, which radian measure represents the point (√3/2, -1/2)?

Back

11π/6

Front

Find θ if tan θ = -1, and θ is in Quadrant II.

Back

3π/4

Front

In which quadrant does θ=130° lie?

Back

Quadrant II

Front

Find θ if cos(θ)=-√3/2, and θ is in Quadrant III.

Back

7π/6

Front

What is the definition of the unit circle?

Back

A circle with a radius of 1 centered at the origin of the coordinate plane.

Front

What are the coordinates of 90° on the unit circle?

Back

(0, 1)

Front

What are the coordinates of 180° on the unit circle?

Back

(-1, 0)

Front

What are the coordinates of 270° on the unit circle?

Back

(0, -1)

Front

What is the relationship between degrees and radians?

Back

180° = π radians.