Washington, Allyn J. <br/><br/>
Plane trigonometry / 
Allyn J. Washington and Carolyn E. Edmond. 
 - Massachusetts :  Cummings Publishing Company, Inc.,  c1977 
 - 371 pages ;  22 cm. 
<br/><br/>Includes index. 
<br/><br/>Chapter 1. Functions and graphs -- Chapter 2. The trigonometric functions -- Chapter 3. Trigonometric functions of any angle -- Chapter 4. Vectors and oblique triangles -- Chapter 5. Logarithms -- Chapter 6. Graphs of the trigonometric functions -- Chapter 7. Basic trigonometric relationships -- Chapter 8. Complex numbers. 
<br/><br/> This book is intended primarily for students who are enrolled in courses in which an understanding of the fundamental concepts of trigonometry is developed. 
<br/><br/><label>ISBN: </label>846586223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRIGONOMETRY
<br/><br/><label>LC Class. No.: </label>QA 531 .W37 1977