What is the radius of the unit circle?

1

What is the equation of the unit circle?

x² + y² = 1

On the unit circle, what does x equal?

cos(θ)

On the unit circle, what does y equal?

sin(θ)

What are the coordinates of a point on the unit circle?

(cos(θ), sin(θ))

What is 360° in radians?

2π

What is 180° in radians?

π

What is 90° in radians?

π/2

What is 60° in radians?

π/3

What is 45° in radians?

π/4

What is 30° in radians?

π/6

What is 0° in radians?

0