Describe in words what happens graphically to a point (x,y): you must pick at least 3 different angle values (acute/obtuse) or more with the same point until you see a pattern.
[cos x -sin x] * [x] = [x,]
[sin x cos x] * [y] = [y,]
That is a matrix with trig functions times a matrix with the x and y coordinates equals a matrix with the new x and y coordinates)
I have no idea how to do this problem and I REALLY need to know the answer tonight