Ratti, J. S <br/><br/>
Precalculus : a unit circle approach 
J.S. Ratti, Marcus McWaters 
 - Student ed 
 - Boston  Pearson  2010 
 - xxiv, 839, [96] p. : ill. (some col.) ; 29 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780321537096 
<br/><br/><label>ISSN: </label>2009005441 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra - Textbooks<br/>Functions - Textbooks<br/>Trigonometry - Textbooks
<br/><br/><label>Dewey Class. No.: </label>515 RAT