*** Unit Circle (freeware)
*** by Daniel J. Bishop
*** danb2k@hotmail.com

How to use this program:

1. Make sure that your calculator is is the correct mode (Degree or Radian).
2. Run UNITCIRC from the PRGM menu.
3. Enter an angle.
4. The calculator will now draw a unit circle and the reference triangle.  Press enter to continue.
5. The calculator will now display the values of all six trig functions (or INFINITY for those that are undefined).