Unit Circle Trig

Front

What is the value of tan based on the unit circle?

Back

y/x

Front

What is sin(120°)?

Back

√3/2

Front

What is the value of cos based on the unit circle?

Back

x

Front

What is cos(π/4)?

Back

√2/2

Front

What is the value of sin based on the unit circle?

Back

y

Front

Define the unit circle.

Back

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

Front

What are the coordinates of the point at 0° on the unit circle?

Back

(1, 0)

Front

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

Back

(0, 1)

Front

What is the relationship between the angles in the unit circle and their coordinates?

Back

The x-coordinate represents cos(θ) and the y-coordinate represents sin(θ).

Front

What is the value of sin(30°)?

Back

1/2