Hayden,  Jerome D. <br/><br/>
Trigonometry/ 
Jerome D. Hayden and Bettye C. Hall. 
 - Philippines :   Anvil Publishing, Inc.,  c1993. 
 - 472 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-13-979709-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry -- Study and teaching (Secondary).
<br/><br/><label>Dewey Class. No.: </label>Cir 516.24 H32 1993