radial to degree, degree to radial conversion

[Coq_Rouge]

Doh! I was only showing this as an example. And also showing how the constants could be calculated, so the OP could get a better understanding. I am sure if the OP want to document his program he/she will apply both the proper labels and some explanatory text if needed. But that will be the OP responsibility not mine

[bartvsc]

Thank you all for the comments. Very helpfull!