Includes indexes.

1. Right Triangle Ratios. 2. Trigonometric Functions. 3. Graphing Trigonometric Functions. 4. Identities. 5. Inverse Trigonometric Functions; Trigonometric Equations and Inequalities. 6. Additional Topics: Triangles and Vectors. 7. Polar Coordinates; Complex Numbers. Appendix A: Comments on Numbers. Appendix B: Functions and Inverse Functions. Appendix C: Plane Geometry: Some Useful Facts. Selected Answers. Index.

Featuring updated content, vivid applications, and integrated coverage of graphing utilities, the ninth edition of this hands-on trigonometry text guides readers step by step, from the right triangle to the unit-circle definitions of the trigonometric functions. Examples with matched problems illustrate almost every concept and encourage readers to be actively involved in the learning process. Key pedagogical elements, such as annotated examples, think boxes, caution warnings, and reviews, help readers comprehend and retain the material.