Triangles – part III Student activity Play

Triangles – part IV Student activity Play

Triangles – reminder Animation Play

Trigonometric ratios in a right-angled triangle Whiteboard presentation Play

Trigonometric ratios in a right-angled triangle Student activity Play

Trigonometric ratios in a right-angled triangle Whiteboard exercise Play

Trigonometric ratios in a right-angled triangle Class activity Play

Trigonometric ratios – a lighthouse Whiteboard exercise Play

Trigonometric ratios – problems Student activity Play

Trigonometric ratios – the angles of the triangle Whiteboard exercise Play

Trigonometry of a general angle Class activity Play

Trigonometry of a general angle Whiteboard presentation Play

Two right-angled triangles Whiteboard exercise Play

Types of triangles Animation Play

Types of triangles – activity Whiteboard exercise Play

Unknown angle in a triangle Animation Play

Unknown side of a triangle Animation Play

Use of a calculator Class activity Play

Use of a calculator Whiteboard presentation Play

Using Heron's formula Animation Play

Using the law of sines Whiteboard exercise Play

Using the pressure equation triangle Animation Play

Using the pressure equation triangle Animation Play

Using the sine rule Whiteboard exercise Play

Using the sine rule Student activity Play