Hagos, Luisito C.,  <br/><br/>
Plane Trigonometry 
Luisito C. Hagos, Sergio E. Ymos Jr. and Carmelita E. Agalabia 
 - Manila  Ymas Publishing House  2001. 
 - [x], 240 pages  Illustrations  25.1 cm 
<br/><br/><label>ISBN: </label>97393014188 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane Trigonometry
<br/><br/><label>LC Class. No.: </label>QA533  / H1234 2001