The small and simple program under MS-DOS for creation and the analysis of trigonometric functions. The program allows to construct on the given expression the diagram on the plane or in a wave mode (tridimentionality emulation). Key press of F4 it is possible to learn directly a derivative, the period, and also the maximum, minimum and null value of function. Except mathematical, also physical parameters are specified: frequency, amplitude, cyclic frequency and initial phase. The program is convenient and easy to use and irreplaceable for who has near at hand no modern computer.

Installation:
Unpack archive and launch the file from the "trigon" folder.