Swokowski, Earl William <br/><br/>
Precalculus :  functions and graphs / 
Earl William Swokowski 
 - 11th edition 
 - xviii, 854 pages :  Illustration ;  25 cm. 
<br/><br/> Include index 
<br/><br/><label>ISBN: </label>9780495383215 049538321X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry