TY  - BOOK
AU  - Hestenes, Marshall D.
TI  - Trigonometry / 
SN  - 0139307443
AV  - QA 531 .H47 1982 
PY  - 1986///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - TRIGONOMETRY - DATA PROCESSING
KW  - CALCULATORS
N1  - Includes index; Chapter 0. Calculators -- Chapter 1. Right triangle trigonometry -- Chapter 2. General trigonometry -- Chapter 3. Analytic and geometric trigonometry -- Chapter 4. Complex number -- Chapter 5. Exponential and logarithmic functions
N2  - The text has been designed so that individual instructors will be able to tailor calculator involvement in the subject matter to the level they prefer. Instructors may have the students use the calculator extensively, only for messy computations, or not at all
ER  -