Solving trigonometric equations involving the cosine function Whiteboard exercise Play

Solving trigonometric equations using the tangent function Whiteboard exercise Play

Stemplot Animation Play

Stemplot Student activity Play

Stretching the graph along the y-axis. Symmetry with respect to the x-axis Student activity Play

Substituting – a complex problem Student activity Play

Sum and difference identities for the cosine Whiteboard exercise Play

Sum and difference identities for the cosine Student activity Play

Sum identity for the cosine Animation Play

Symmetry in the coordinate system with respect to the point (0, 0) Student activity Play

The anti-derivative of the cosine function Whiteboard exercise Play

The chain rule Whiteboard exercise Play

The chain rule Animation Play

The chain rule Student activity Play

The chain rule for more than two functions Student activity Play

The chain rule for more than two functions Animation Play

The cosine and coordinates of the points Animation Play

The cosine of an arbitrary angle Student activity Play

The cosine of an arbitrary angle Simulation Play

The cosine rule Whiteboard exercise Play

The cosine rule Class activity Play

The cosine rule Student activity Play

The cosine rule Whiteboard presentation Play

The cosine rule leading to two solutions Animation Play

The cosine rule – special case Animation Play