The equation of the circle whose centre is at point O' is x 2+32 x + y 2 - 24 y = 0 The coordinates of point A are (-34.794m. 18.840m). and those of point B are (-7.548m,30.126m). The tangents to the circle : line AC at A. and line BC at B intersect at point C. Find the Coordinates of point C to a precision of 1mm.