Trigonometry :  worktext / 
Rodolfo Tungcab... [et al.]. 
 - Metro Manila :  Grandbooks Pub,  c2012. 
 - 105 p. ; 27 cm. 
<br/><br/> Includes glossary. 
<br/><br/><label>ISBN: </label>9789717251516 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.--Worktext.