Trigonometry/ 
Mark Dugopolski  
 - Third edition 
 - Singapore:  Pearson Education,  2013. 
 - ii, 407 pages:  illustrations;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9789814648783 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>LC Class. No.: </label>Circ. QA 531 .P764 2013