Balmeo, Virginia G. <br/><br/>Worktext in trigonometry for college freshmen /  Virginia G. Balmeo.   - Intramuros, Manila   Purely Books Trading and Publishing,  [2012]  ©2012  - 153 pages :  illustrations ;  26 cm <br/><br/> Include references. <br/><br/><label>ISBN: </label>9789719553045 <br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.<br/>Trigonometry -- Problems, exercises, etc. <br/><br/><label>LC Class. No.: </label>QA 537  / .B215 2012