TY  - BOOK
AU  - Cohen, David
AU  - Cohen, David
TI  - Trigonometry
SN  - 0-534-50046-3
U1  - BCir.516 
PY  - 1998///
CY  - -United states of america
PB  - Brooks/cole publishing company
N1  - includes appendix & index; Chapter one. -- Coordinate geometry and functions -- Two. Trigonometric functions of angles --  Three. Trigonometric functions of real numbers -- Four. Analytical Trigonometry -- Five. Triangles and vectors -- Six Complex Numbers -- Seven. Analytic Geometry.
ER  -