Baltazar, Ethel Cecille M. <br/><br/>
Plane and spherical trigonometry : text/workbook / Ethel Cecille M. Baltazar, Ana Liza M. Dy, and Melvin A. Vidar 

 - Quezon City  C & E Pub.  c2014. 
 - 257 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-971-98-0164-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry -- Problems, exercises, etc.<br/>Trigonometry -- Textbooks.
<br/><br/><label>Dewey Class. No.: </label>Cir 514.076 B216 2014