This text provides students with a solid understanding of the definitions and principles of trigonometry and their application to problem solving. Identities are introduced early in Chapter 1. They are reviewed often and are then covered in more detail in Chapter 5. Also, exact values of the trigonometric functions are emphasized throughout the textbook. There are numerous calculator notes placed throughout the text.McKeague, Charles P. is the author of 'Trigonometry With Infotrac', published 2003 under ISBN 9780534403928 and ISBN 0534403921.