Mejia, Leila DP.  <br/><br/>Plane Trigonometry :  a modern approach / Leila DP. Mejia and Yonard A. Gabuyo.--  -- Manila:  Rex Book Store,  2004. <br/>x, 300 p. ;  26 cm. <br/><br/> Includes bibliographical references and index. <br/><br/><label>ISBN: </label>9712340872 <br/><br/><label>Subjects--Topical Terms: </label><br/>Trogonometry. <br/>Trigonometry-Study and teaching. <br/><br/><label>Dewey Class. No.: </label>Fil 516.24 M479 2004