Class 10 · Mathematics (Standard) · Unit 8: Introduction to Trigonometry

Finding Other Ratios from One

Lesson 6 of 6

If one ratio is given (e.g.

\sin\theta = 3/5

), form a right triangle with sides matching the ratio, use Pythagoras to find the third side, then read off all other ratios. This is a standard problem type.

Techniques to Prove Identities

Unit complete

Try the practice skills

All lessons in this unit

1. Right Triangle Ratios
2. Values at Standard Angles
3. Fundamental Identity
4. Complementary Angles
5. Techniques to Prove Identities
6. Finding Other Ratios from One