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### Course: Class 10 (Old) > Unit 8

Lesson 3: Trigonometric ratios of some specific angles- Special right triangles intro (part 1)
- Special right triangles intro (part 2)
- Trigonometric ratios of special angles
- 30-60-90 triangle example problem
- Special right triangles
- Special right triangles proof (part 1)
- Special right triangles proof (part 2)
- Evaluating expressions of trigonometric ratios for some special angles

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# Trigonometric ratios of special angles

## Problem

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