This first-year textbook introduces angles, radian measure, graphs of trigonometric functions, trigonometric equations, oblique triangles and vectors, complex numbers, and polar coordinates. The fourth edition provides uniform problem sets at the end of each chapter and adds appendices on functions, graphs, and sets of numbers. The CD-ROM contains video instruction and a graphing calculator tutorial. Annotation ©2005 Book News, Inc., Portland, OR (booknews.com)