BaseStation Outlines - Plotting Arcs

[G4UMW]

Arcs in controlled airspace boundaries are defined by origin (lat/lon), radius (nm) and end points (also lat/lon). Can anyone give me the formula for creating such arcs to be displayed on BaseStation? I've Googled without success and my days of using spherical trignometry are far behind me!

MTIA,
Rob

[Anmer]

I think Acarslogger may be able to help as he creates VOR roses and holds.

Assuming he sees this post!