Cohen, David, <br/><br/>
Precalculus with-Unit-Circle trignometry 
David Cohen 
 - St. Paul:  West Publishing,  1990. 
 -  xi, 627p. 
<br/><br/> includes index 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0314710159 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functions<br/>Algebra <br/>Trigonametry
<br/><br/><label>Dewey Class. No.: </label>512.1  / COP