Respuesta :
The Correct Answer to your problem is 6.28
Depends on the value of n. If n is even, cos(n*pi) = cos(0) = 1 If n is odd, cos(n*pi) = cos(pi) = -1
cos(0) = 1 When you make 1 full 2pi rotation, you end up at the same place. So cos(2*n*pi) = cos(0) = 1.
Depends on the value of n. If n is even, cos(n*pi) = cos(0) = 1 If n is odd, cos(n*pi) = cos(pi) = -1
cos(0) = 1 When you make 1 full 2pi rotation, you end up at the same place. So cos(2*n*pi) = cos(0) = 1.