Natural Trig Functions

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It was a computer Wang 2200 - see please http://en.wikipedia.org/wiki/Wang_2200 (a Russian version Искра-125 see the picture). I have created the first my simulator with it.

The BASIC of this computer has three operators

SELECT R (default, as in Mathcad now)

SELECT D (degree)

SELECT G (grad: 2pi=400 grad)

One my student has selected not SELECT D (for sin(45) etc) but SELECT G (G - градус [gradus] degree in Rusian).

It was very interesting to see, how this student has tried to debug a program

It was also a good joke for 1-th April!