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# Trigonometry
- URL: https://www.esheets.io/trigonometry/
- Published: 2026-07-09T20:13:06.000Z
- Updated: 2026-07-09T20:13:06.000Z
- Author: Richard Linnington
- Tags: Geometry and Shape, Maths, Topics

Trigonometry is used to find missing sides and angles in triangles by using relationships between their measurements. At GCSE, this includes the sine, cosine and tangent ratios, as well as the sine rule and cosine rule for non-right-angled triangles.

Explore our trigonometry worksheets, guides and interactive resources to practise choosing the correct method and solving a wide range of triangle problems.

- [Find missing angles](https://www.esheets.io/finding-angles-using-trigonometry/)
- [Finding missing sides](https://www.esheets.io/finding-missing-sides-with-trigonometry/)
- [Non-calculator trigonometry problems](https://www.esheets.io/non-calculator-trigonometry-using-exact-values/)