TY  - BOOK
AU  - Ratti, J. S
AU  - McWaters, Marcus M
TI  - Precalculus : a unit circle approach
SN  - 9780321537096
SN  - 200900544
U1  - 515 RAT 
PY  - 2010///
CY  - Boston
PB  - Pearson
KW  - Algebra - Textbooks
KW  - Functions - Textbooks
KW  - Trigonometry - Textbooks
N1  - Includes index
ER  -