Which of the following statements is correct? Given n! m!(n-m)! (a) cos ne= cos" ( (b) sin no= n ( n -{(2) cos n-1 Cos (c) cos ne = cos" 0+ (d) sin necos" 0. is the binomial coefficient n 2 -(1) 2 n-2 n Osin 0+ COS 3 Osin 0+ n-3 cos-2 Osin 0+ cos" Osin 0 + n-2 n 4) Cos"-+ 0 sin 0+... n 4 cos"40sin 0-... n 4 cos n-4 0 sin* 0+.... - COS esin 0-....