How I Teach Trigonometry Ratios Part 1

This is a 25 page Smartboard file explaining how to establish the ratios needed to do basic trigonometry. The lesson starts out giving definitions for hypotenuse, opposite, and adjacent. Next comes the words sine, cosine, and tangent along with a mnemonic to help remember the ratios. There is plenty of practice choosing which ratio you have and all practice pages include answers.