Question

Let lim f(x) =16 as x->4 and lim g(x) =8 as x->4

Use the limit rules to find
lim [cos(pi*f(x)/g(x))] as x->4

Answer 1

Huh?

cos ( pi *16 /8 ) ??
cos 2 pi = 1
I do not see what this has to do with limits