Baltazar, Ethel Cecille M. <br/><br/>
Plane and spherical trigonometry / 
Ethel Cecille M. Baltazar, Ana Liza M. Dy, Melvin A. Vidar. 
 - Quezon City :  C & E publishing,   2014. 
 - ix, 257 p. :  black and white illustrations ;  26 cm. 
<br/><br/> Includes references. 
<br/><br/><label>ISBN: </label>978 971 980 164 1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry.<br/>Spherical trigonometry.<br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>FIL 516.24 B21p 2014