http://www.coniserver.net/ubb7/ubbthreads.php?ubb=showflat&Number=250560#Post250560
If watched or searched for.

But I'd use (as in above link) sin() and cos() to calculate angular positions (if the term is correct :P)

Cheers!

New into Gamestudio and eager to learn it..
Stuff and games done in 2D: LINK