code: def rotate(x, y, degree):
      
      radian = float(degree) * 2 * math.pi / 360.0
      newx = math.cos(radian) * x - math.sin(radian) * y
      newy = math.sin(radian) * x + math.cos(radian) * y
      return (newx, newy)
docs: Rotate a coordinate around point (0,0).
      - x and y specify the coordinate.
      - degree is a number from 0 to 360.
      Returns a new coordinate.