A dinghy is pulled toward a dock by a rope from the bow through a ring on the dock 7 ft above the bow The rope is hauled in at the rate of 3 fu sec Complete parts a and b a How fast is the boat approaching the dock when 25 ft of rope are out sec Type an integer or a simplified fraction b Al what rate is the angle 0 changing at this instant radisec Type an integer or a simplified traction