Unit circle and exact values

Front

What is the value of cos(π)?

Back

-1

Front

What is the value of cos(3π/2)?

Back

0

Front

What is the value of tan(0)?

Back

0

Front

In which quadrants is cos(θ) positive?

Back

The 1st and 4th quadrants.

Front

In which quadrants is tan(θ) positive?

Back

The 1st and 3rd quadrants.

Front

What is the definition of 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 angle π/2 on the unit circle?

Back

(0, 1)

Front

What are the coordinates of the point at angle π on the unit circle?

Back

(-1, 0)

Front

What are the coordinates of the point at angle 3π/2 on the unit circle?

Back

(0, -1)

Front

What is the relationship between sine and cosine on the unit circle?

Back

Sine corresponds to the y-coordinate and cosine corresponds to the x-coordinate of a point on the unit circle.