# Trigonometry Notes

- Created by: row228
- Created on: 26-11-17 16:13

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Trigonometry can be used to calculate the lengths of sides and sizes of angles in **right-angled triangles**.

# The three formulae:

- sin
- cos
- tan

The sides of the right-angled triangles are given special names - the **hypotenuse**, the **opposite** and the **adjacent**.

The hypotenuse is the longest side and is always opposite…

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