JHA (D K) & SINHA (H C). <br/><br/>
Text book of trignometry. 

 - Delhi  S. Chand & Co. Ltd.  1966 
 - 224,x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516.24 JHAT