Ross, Debra Anne <br/><br/>
Master math:   trigonometry / 
Debra Anne Ross. 
 - Australia :  Course Technology CENGAGE Learning,  2010. 
 - 420 p. : ill.:  23 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>13: 978-1-59863-985-8