**In this module, you can study ****how to use trig ratios (sine, cosine and tangent) to find an unknown side length or unknown angle measure in a right triangle.**

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The sine, cosine and tangent ratios we're studying here ONLY work with right triangles.

**Study and practice**

- Study finding an angle measure using trigThis page from mathsisfun.com explains how to find the measure of an unknown angle using trig ratios (sine, cosine and tangent). The explanation is followed by worked examples and a set of practice questions.
- Quiz yourself on finding an unknown angle measure using trigDo you know how to find an unknown angle measure using sine, cosine and tangent? Test yourself at mathopolis.com!

Use these search terms to find your own resources:

*solving right triangles with trigonometrysolving right triangles with sines, cosines and tangents*