Trigonometry / 
Ayres, Frank ; Moyer, Robert 
 - USA :  McGraw-Hill Companies, Inc,  2002. 
 - v, 120 p.: ill. ; 21.6cm. 
<br/><br/>Includes; index 
<br/><br/><label>ISBN: </label>0071383182 
<br/><br/><label>Dewey Class. No.: </label>C 516.24 Ay 2002