u/Apprehensive_Ebb1657

I'm trying to figure out a way to display "spokes" around a circle using several lines in one list. The intention for what is shown here is to display the top right quarter of the circle of spokes. The problem arises when I want to have the amount displayed be dynamic (variable n). I've tried two methods, show in x1 and y1, but in both it's given me the "ranges must be arithmetic sequences" error. Does anyone smarter than me know how to fix this? Graph link is https://www.desmos.com/calculator/gwrlm1btdr, thanks!