Drooyan, Irving <br/><br/>
Trigonometry :  an analytic approach / 
Irving Drooyan, Walter Hadel, Charles C. Carico 
 - 4th ed 
 - New York :  Macmillan,  1983 
 - ix, 374 p.:  ill. ;  25 cm. 
<br/><br/>Includes index 
<br/><br/><label>LCCN: </label>82-015295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry, Plane