Students learn how to solve trigonometrical equations using special triangles.

As learning progresses they use the properties of trigonometric graphs to find additional solutions beyond 90°.

**Differentiated Learning Objectives**

- All students should be able to calculate the exact values of Sin and Cos 30°, 45°, 60° and 90°.
- Most students should be able to solve trigonometric equations such as 2Cos45°.
- Some students should be able to use trigonometric graphs to find alternative solutions to Sin, Cos and Tan 30°, 45°, 60° and 90°

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