I try to draw sectors with 60...90 degrees azimuths by Shapetool (see picture 1). Every sector seems to get a bit different from each other. I guess this has something to do that sectors get distorted further away from central meridian of my projected coordinate system (RT90 in Sweden).
In second picture each sector should be from 60...90 azimuth so that southernmost side of sector should be horizontal. But clearly that is not the case. Sectors to the right have southernmost side pointing upwards while sectors to the left have them pointing downwards.
Is there a way to get "undistorted" sectors and be shown somehow in my projected coordinate system (RT90)?