sin and cos on the unit circle

Key values of sin, cos & tan

Symmetry about the y-axis

Quadrants

Periodicity

Exercise

Symmetry about the origin

Symmetry about the x-axis

Relating Angles between Quadrants

Exercise

tan as slope in the unit circle

sin²θ+cos²θ=1

Exercise

Sine and Cosine functions

Sinusoidal Functions

tan function

Problem

Solving sinθ=a

Solving cosθ=a

Trigonometric solution domains

Exercise

Trigonometric quadratics

Problem

Problem

sin²θ+cos²θ=1

Sine double angle identity

Cosine double angle identity

Problem

Problem

Problem

Inverse sine (arcsin) function

Inverse cosine (arccos) function

Inverse tan (arctan) function

Reciprocal trig functions

1+tan²θ=sec²θ

1+cot²θ=cosec²θ

Sine and cosine compound angle identities

Tan double angle identity

Tan compound angle identity