Baltazar, Ethel Cecille M., <br/><br/>
Plane and spherical trigonometry:  textbook/workbook / 
Ethel Cecille M. Baltazar, Ana Liza M. Dy, Melvin A. Vidar. 
 - Quezon City :  C & E Publishing, Inc.,  2014. 
 - ix, 257 pages :  illustrations, graphs ;  26 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>9789719801641 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry--Textbooks.<br/>Trigonometry--Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>516.24  / B18