I'm sorry, but I don't understand what you mean by "around an out of center"?The circle rotates around an out of center origin...
What do you mean by "dimensions"? Are you perhaps referring to the radius and the center, so you're wanting to use trigonometry to find the coordinates, on the circle's rim, of the rotated point, with respect to the original x,y-plane?The circles center is fixed relative to the center of rotation...i need to predict the X and Y based on the original known diminsions once the circle has been rotated about the origin a know degree..