Graphs of f(x)=sinx and g(x)=cox for -360<x<360 of same set of axes and the different between these 2 graphs
surely you can plot each of these curves. But just to remind you,
http://www.wolframalpha.com/input/?i=plot+y%3Dsinx,+y%3Dcosx,+y%3Dcosx-sinx