Trigonometric ratios – the altitude of the Sun Whiteboard exercise Play

Trigonometric ratios – the angles of the triangle Whiteboard exercise Play

Trigonometry of a general angle Whiteboard presentation Play

Trigonometry of a general angle Class activity Play

Triiodide ion molecule Animation Play

Trisecting an angle Animation Play

Two isosceles triangles Whiteboard exercise Play

Two mirrors Animation Play

Two mirrors Animation Play

Two points on the shoreline Animation Play

Two right-angled triangles Whiteboard exercise Play

Two vectors and the angle between them Whiteboard exercise Play

Types of angles Animation Play

Unknown angle in a triangle Animation Play

Use of a calculator Whiteboard presentation Play

Use of a calculator Class activity Play

Uses of periscopes Illustration Play

Using tangent theorems Student activity Play

Using the basic constructions Student activity Play

Using the calculator to solve trigonometric equations Animation Play

Using the measures of central tendency Whiteboard exercise Play

Values of the tangent Animation Play

Various angles Whiteboard exercise Play

Velocity vector in projectile motion at an angle Simulation Play

Velocity vector in projectile motion at an angle Student activity Play