I am trying to find the X,Y coordinates of points on an arc in 1 degree steps so 270deg to 90deg and i believe the answer lies in trigonometry

I know the answer is probably staring at me but i can't find it in a form that my feeble brain can interpret, its probably very simple to most ??

I really want a python formula that will take a degree input from 0 to 180, say 20 and return an XY pair that indicates that point on the arc at a known radius, say r=100.

It will end up running an LCD display of size 240 x 240 so the centre point will be x=120, y=120

Any help much appreciated