Algebra and trigonometry :  precalculus / 
Judith A.Beecher 
 - 3rd ed.  
 - Boston :    Pearson Education,   2008. 
 - 695 p. : 
<br/><br/> includes index  
<br/><br/><label>ISBN: </label>97803214648 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Precalculus 
<br/><br/><label>LC Class. No.: </label>QA152.3 .B42 2008