Eleven forces each equal to 5N act on a particle simultaneously. If each force makes an angle ${30}^{0 }$with the next one, the resultant of all forces is (2x+1) then x is ___

If (N–1) number of vectors equal in magnitude are acting simultaneously on a particle are such that each vector subtends $2\pi /N$ angle with its former vector, the magnitude of their resultant is equal to the magnitude of given vectors. By comparing n=2