A man can swimn at a speed of 3 km/h in still water. he wants to cross a 500 m wide river flowing at 2 km/h. he keeps himself always at an angle of 120° with th

A man can swimn at a speed of 3 km/h in still water. He wants to cross a 500 m wide river flowing at 2 km/h. He keeps himself always at an angle of 120° with the river flow while swimming. (a) Find the time he takes to cross the river. (b) At what point on the opposite bank uwill he arrive?