The purpose of this lesson is to introduce you to right triangle trigonometry without using the unit circle. You are also familiar with special right triangles (45-45-90 and 30-60-90) and some angle vocabulary. Now, we will use the Pythagorean Theorem to find missing sides of right triangles. Use the three sides of a triangle to determine the 3 trigonometric ratios.
INTRODUCTION TO TRIGOMETRIC RATIOS
RATIONALE
Licensed under the Creative Commons Attribution Share Alike License 4.0