Two light houses are located along the Atlantic ocean on a north-south line. The light houses are 18 miles apart. Both light houses receive a distress call from ship at the same time. From the northern light house the, ship is at an angle of 10° south of east. From the southern lighthouse, The ship is at an angle of 65 north of east. Find the distance from northern light house to the ship, to the nearest 10th of a mile.