Barcelon, Dolores G. <br/><br/>Plane trigonometry  / Dolores G. Barcelon.--  -- Meycauyan, Bulacan:  Trinitas Pub.,  2003. <br/>228 p. ;  24 cm. <br/><br/> Includes bibliographical references and index. <br/><br/><label>ISBN: </label>9714204119 <br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry-Problems, exercises, etc.<br/><br/><label>Dewey Class. No.: </label>Fil 516.24 P693 2003