3.32 Exact Trig Values GCSE PowerPoint Lesson

In this 26-slide lesson, pupils will learn how to recall and derive exact values of sine, cosine, and tangent for key angles (0°, 30°, 45°, 60°, and 90°). Pupils will explore how these values appear on sine, cosine, and tangent graphs to reinforce understanding. The lesson continues with constructing special triangles and using Pythagoras’ Theorem to find side ratios. A strong emphasis is placed on reasoning, pattern recognition, and non-calculator fluency.

The lesson includes:

• Clear, guided examples

• One structured task to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential geometry concepts.