1. The problem statement, all variables and given/known data A woman at point A on the shore of a circular lake with radius 2 miles wants to arrive at point C diametrically opposite A on the shore of the lake in the shortest time possible. She can walk at 4 mph and row a boat at 2 mph. To what point on the shore of the lake should she row before walking o minimize time? Verify your answer. 2. Relevant equations Distance = velocity x time t=d/v total time = d in water/2mph + d on land/4mph 3. The attempt at a solution I know that I must use angles to find the point B but I have no idea exactly what to do. If i could find the relation I could easily optimize it, but I really have no idea how to do it.