Calingasan, Recto Rex M. <br/><br/>
Trigonometry : a worktext 

 - Mandaluyong City :  Anvil Publishing,  c2013 
 - 212 p. : ill. ;  25.3 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9789712727818 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.
<br/><br/><label>Dewey Class. No.: </label>Fil 516 C129t 2013