Baltazar, Ethel Cecille M. <br/><br/>
Plane and spherical trigonometry  text / workbook 
Ethel Cecille M. Baltazar, Ana Liza M. Dy, Melvin A. Vidar. 
 - ix, 257 pages  illustrations  26 cm 
<br/><br/><label>ISBN: </label>9789719801641 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry--Problems, exercises, etc.<br/>Spherical trigonometry--Problems, exercises, etc.<br/>Trigonometry--Textbooks.<br/>Trigonometry--Problems, exercises, etc.