You use the trigonometric ratios when you are given a side and an angle in a right angle triangle and are asked to **find a missing side**.

**Note:** Which ratio to use will depend on the data you are given about the triangle.

Here are some examples below

If you are asked to **find an angle** in a right angle trianle and are given two sides then, in this case, you use the **INVERSE TRIGONOMETRIC functions**.

You use the trigonometric ratios when you are given a side and an angle in a right angle triangle and are asked to

find a missing side.Here are some examples below

If you are asked to

find an anglein a right angle trianle and are given two sides then, in this case, you use theINVERSE TRIGONOMETRIC functions.## Nouri Dib