This function calculates the values of the asymptote angles for a root locus through an input of a single N-M (number of zeroes subtracted from number of poles) or a vector of N-M (for a single beta value) and beta, which determines the overall sign. For beta positive, input value can be any positive number or omitted as the default sign is positive, and for beta negative, it can be any negative number. The function is very helpful while sketching high order root locus plots.