Mittal, P.k. <br/><br/>
Textbook of trigonometry 
by P.K. Mittal 
 - New delhi  Har-Anand Pub.  1995 
 - 250 
<br/><br/><label>ISBN: </label>8124101671 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonmetry
<br/><br/><label>Dewey Class. No.: </label>516.24  / MIT N5