Radian Measure

Abstract

Trigonometric functions have many real-life applications. The applications listed below represent a small sample of the applications in this chapter. ■ Sports, Exercise 95, page 267 ■ Electrical Circuits, Exercise 73, page 275 ■ Machine Shop Calculations, Exercise 83, page 287 ■ Meteorology, Exercise 109, page 296 ■ Sales, Exercise 72, page 306 ■ Predator-Prey Model, Exercise 59, page 317 ■ Photography, Exercise 83, page 329 ■ Airplane Ascent, Exercises 29 and 30, page 339 ■ Harmonic Motion, Exercises 55–58, page 341 The six trigonometric functions can be defined from a right triangle perspective and as functions of real numbers. In Chapter 4, you will use both perspectives to graph trigonometric functions and solve application problems involving angles and triangles. You will also learn how to graph and evaluate inverse trigonometric functions.