Plane and spherical trigonometry  : text/workbook 
/ Ethel Cecille M. Baltazar ... [et al.] 
 - ix, 257 p. :  ill. 
<br/><br/><label>ISBN: </label>9789719801641 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry -- Textbooks<br/>Trigonometry -- Problems, exercise, etc.
<br/><br/><label>Index Terms--Genre/Form: </label>
<br/><br/><label>Dewey Class. No.: </label>516.34