Constructing the graph of the cosine function Animation Play

Constructing the graph of the cosine function Animation Play

Cosine function as a parameter Animation Play

Definition of basic trigonometric ratios Animation Play

Definition of trigonometric functions Student activity Play

Definition of trigonometric functions Whiteboard exercise Play

Depth of the harbour entrance Student activity Play

Derivatives of trigonometric functions Whiteboard presentation Play

Derivatives of trigonometric functions Class activity Play

Difference identity for the cosine Animation Play

Domain and periodicity of trigonometric functions Student activity Play

Double-angle formula for the cosine Student activity Play

Double-angle formula for the cosine Whiteboard exercise Play

Double-angle formulas Whiteboard presentation Play

Double-angle formulas Class activity Play

Drawing a circle Whiteboard exercise Play

Drawing a circle Student activity Play

Equations involving the cosine function Whiteboard exercise Play

Equations involving the cosine function Student activity Play

Equations involving the tangent function Whiteboard exercise Play

Equations involving the tangent function Student activity Play

Equations with cos(ax) Whiteboard exercise Play

Equations with  cos(ax) Student activity Play

Exact values of trigonometric ratios Animation Play

Exact values of trigonometric ratios for selected angles Animation Play