Haggard  Gary. Sullivan Michael. <br/><br/>
Trigonometry 

 - 2nd ed. 
 - California  Dellen  1990 
 - 441 p. 
<br/><br/><label>ISBN: </label>0024182818 
<br/><br/><label>Subjects--Topical Terms: </label><br/>”TRIGONOMETRY”
<br/><br/><label>LC Class. No.: </label>QA531  / S85T 1990