How to write three basic trigonometric ratios 

In this post we are learning how to recognize the three sides of a right angled triangle as hypotenuse, opposite and adjacent. Once done that writing the three basic ratios are very easy. I did that little exercise below;

Please note all my work is free to use as you want. I don't think that this is the only way to do trigonometry, the other day me or some other mathematician can come up with an easier version to do the same sorts of problems. So feel free to use all my work as you want (Just don't sell it on other sites please).