Module 5-I – Review of Triangle Trigonometry

Section 5-I.3 -Trigonometric Ratios

Introduction

Since right angles are so common in our culture - and in any case any non-right-angled triangle can be broken up into right angled pieces, it is particularly useful to know the ratios of sides of right angled triangles.  These are the famous trigonometric ratios  - which we will now consider.

What to Do

1.         Read section 5.2  of the text.

2.         Read the  Study Notes and Discussion for this module, and make sure that you have absorbed the main points by answering the questions.

3.         Follow the instructions regarding Further Practice until you have achieved the Learning Objectives for this section.