Common Core maths standard · High School Functions

HSF-TF.A.1

Use radian measure and the unit circle to find sine and cosine of special angles in every quadrant. One game practises it.

High School · Functions

Graphs & transformations · Rate of change · Linear vs exponential · Trigonometry

1 think & learn

Think & learn HSF-TF.A.1 · HSF-TF.A.2

Radians, reference angles and signs. Every point on the unit circle is (cos θ, sin θ).