QCAD map/plan orientation

[adrien214]

I am using Qcad to design the plan for a real-life lot where there are buildings.

I went to the field, measured an took azimuths but when I got back to Qcad, I noticed the angles are counted counter-clockwise starting from 90 deg horizontal while I need the normal version of angles, starting at 0 dec vertical clockwise to 360 deg... impossible to reproduce my schematics from the field.

Am I doing something wrong or is there a way to set the way angle are counted in Qcad?

EDIT: I've really lost all those years of maths because I was convinced I still knew how to measure angles but it still doesn't help with my azimuths.

EDIT1: what I need is a way to convert clockwise angles to counterclockwise angles, I guess I'll end up doing it by hand.