Larson, Ron. <br/><br/>
Algebra and trigonometry/ 
Ron Larson. 
 - Ninth Edition 
 - Andover:  Cengage Learning,  c2016. 
 - xii, 951 pages:  illustrations;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>978-981-4617-44-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra<br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>DC 512.13  / L334