Malik, G.S. and Srivastava, K.C. <br/><br/>
A Text-Book of Trigonometry 

 - Meerut  Kedar Nath Ram Nath & Co.  1980 
 - 92 
<br/><br/><label>Publisher. No.: </label> Bangalore Book Bureau 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics