Sinx and cosx functions

Well no, because thats the sine function, and not the cosine function! This may help: http://en.wikipedia.org/wiki/Trigonometric_function

 

Ok, try this: http://faculty.ed.umuc.edu/~swalsh/Math Articles/Graphing Sin Cos.html

 

Maybe cristo just missed it, but Ry122 is actually right, cosine can also be expressed in that form of asin(bx+c) + d.

This happens because sin (90degrees-x)= cos x.

So in answer to your original question, the difference when graphed between sin x and cos x is that the cos graph is the same as sins, moved back 90 degrees to the left.