Tungcab, Rodolfo G. ; Mangune, Ubaldo P. jr. et al. <br/><br/>
Trigonometry :   worktext / 
Rodolfo G. ; Mangune, Ubaldo P. jr. et al. Tungcab. 
 - Pateros, Manila :  Grandwater Publishing,  2011. 
 - 113:  22 cm. 
<br/><br/> Includes glossary 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>13:978-971-0183-04-3 
<br/><br/><label>LC Class. No.: </label>516.24 T73