## Naming the Sides of a Right-Angled Triangle

In this tutorial I show you how to name the sides of a right-angled triangle in preparation for using trigonometry to find lengths and angles in right-angled triangles.

## Trig Ratios: sinθ, cosθ and tanθ

In this tutorial I show you the trigonometric ratios sinθ, cosθ and tanθ and easy ways to remember them.