Swokowski, Earl William. <br/><br/>
Fundamentals of trigonometry / 
Earl W. Swokowski. 
 - 7th ed. 
 - Boston :  PWS-Kent,  c1989. 
 - x, 355, 60 p. :  ill. 
 - The Prindle, Weber and Schmidt series in mathematics. .
 - Prindle, Weber & Schmidt series in mathematics. .
<br/><br/><label>ISBN: </label>0534917305 
<br/><br/><label>LCCN: </label>92014077     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry