Question: Graph sinx - cosx on (0,2pi)

how to graph???

also is this graphable on a graphing calc...if so how? (if its graphable help me with the maxmin windows as well)

You could use the on-line graphing capability of Desmos: https://www.desmos.com/calculator

You would enter: y= sin(x)-cos(x) {0≤x≤2*pi}