Relations between the sine and the cosine Whiteboard exercise Play

Rewriting the sine using double-angle formulas for the tangent Animation Play

Shifting the graph along the y-axis Animation Play

Simple trigonometric equations Class activity Play

Simple trigonometric equations Whiteboard presentation Play

Simple trigonometric inequalities Student activity Play

Solving basic trigonometric equations involving the sine function Whiteboard exercise Play

Solving basic trigonometric equations involving the sine function Student activity Play

Solving problems Student activity Play

Solving problems involving trigonometric equations Class activity Play

Solving problems involving trigonometric equations Whiteboard presentation Play

Solving problems involving trigonometric ratios Whiteboard presentation Play

Solving problems involving trigonometric ratios Class activity Play

Solving trigonometric equations using the tangent function Whiteboard exercise Play

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

Stretching the graph along the  y-axis Animation Play

Sum and difference identities for the sine Animation Play

Sum and difference identities for the sine Student activity Play

The angle between two sides in a triangle Animation Play

The anti-derivative of the sine function Whiteboard exercise Play

The area of a regular hexagon Whiteboard exercise Play

The area of a segment Whiteboard exercise Play

The area of a triangle Student activity Play

The area of a triangle Whiteboard exercise Play

The area of an equilateral triangle Whiteboard exercise Play