Cohen, David. <br/><br/>
Precalculus with unit-circle trigonometry/ 
David Cohen ; David Cohen. 
 - xii, 627, 99, 6 p. :  ill. (some col.) ;  27 cm. 
<br/><br/> Half title: Precalculus.  
<br/><br/><label>ISBN: </label>0314668136 0314710159  6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functions. <br/>Algebra. <br/>Trigonometry. 
<br/><br/><label>LC Class. No.: </label>QA331.3  / .C64 1990