CHAPTER^5
Trigonometry
5.1 Introduction 108
5.2 Similarity of triangles 108
5.3 Defining the trigonometric ratios 110
5.4 Reciprocal ratios 115
5.5 Calculator skills 116
5.6 Special angles 118
5.7 Solving trigonometric equations 120
5.8 Defining ratios in the Cartesian plane 131
5.9 Chapter summary 138