Introduction 1 Part 1: Getting Started with Trigonometry 5 Chapter 1: Taking On Trig Technicalities 7 Chapter 2: Cooperating with Cartesian Coordinates 31 Chapter 3: Finding Degrees in Triangles and Planes 51 Chapter 4: Dishing Out the Pi: Radians 63 Chapter 5: Tackling Right Triangles 77 Part 2: Trigonometric Functions 89 Chapter 6: Describing Trig Functions 91 Chapter 7: Relating Triangles to Circular Functions 107 Chapter 8: Taking Trig Functions Global 123 Chapter 9: Applying Yourself to Trig Functions 139 Part 3: Identities 159 Chapter 10: Introducing Basic Identities 161 Chapter 11: Operating on Identities 177 Chapter 12: Proving Identities: The Basics 197 Chapter 13: Sleuthing Out Identity Solutions 213 Part 4: Equations and Applications 231 Chapter 14: Investigating Inverse Trig Functions 233 Chapter 15: Making Inverse Trig Work for You 241 Chapter 16: Solving Trig Equations 253 Chapter 17: Obeying the Laws and Applying Them 277 Part 5: The Graphs of Trig Functions 301 Chapter 18: Graphing Sine and Cosine 303 Chapter 19: Graphing Tangent and Cotangent 319 Chapter 20: Graphing Two More Trig Functions 327 Chapter 21: Topping Off Trig Graphs 339 Part 6: The Part of Tens 353 Chapter 22: Ten Basic Identities Plus Some Bonuses 355 Chapter 23: Ten Not-So-Basic Identities 361 Appendix: Graphs and Function Values 367 Index 373.