The man rows at v1 miles per hour and walks at v2 miles per hour. Let 1 and 2 be the magnitudes of the angles. Show that the man will reach point Q in the least time when sin(1) v1 = sin(2) v2 .

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your