Demana, Franklin D., <br/><br/>
Trigonometry, a graphing approach / 

 - Reading, Mass. :  Addison-Wesley Pub. Co.,  c1990. 
 - xii, 482, 14 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0201528126 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516 D.C. H1995 A111 Or.