Chua, Simon L. <br/><br/>
Soaring 21st Century Mathematics: appreciating trigonometry 
Soaring 21st Century Mathematics: appreciating trigonometry 
 - Quezon City  Phoenix Publishing House, Inc.  2014 
 - ix, 369  25 cm  illustrations (some) 
<br/><br/> Includes table of contents and index 
<br/><br/><label>ISBN: </label>971-06-2667-1 
<br/><br/><label>Dewey Class. No.: </label>F516.24  / S676