Lial, Margaret L. <br/><br/>
Trigonometry / 
Margaret L. Lial, John Hornsby, David I. Schneider. 
 - 9th ed. 
 - Boston :  Addison Wesley,  c2009. 
 - xviii, 465p. :  fully ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9789810697327 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>C 516.24 L613 2009