Larson, Ron,  1941- <br/><br/>
Trigonometry / 
Roland E Larson; Robert Hostetler 
 - Lexington :  D.C. Heath and Company,  c1989. 
 - xv, 435 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0669162663  £50.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.<br/>Trigonometry--Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>516.24  / LAT 1989