8. A boat leaves port and sails in still water at 5.6 mph for 3.5 hours. The boat then turns at a 57 degree angle and sails at 4.9 mph for 4.25 hours.
a. If the boat turns and heads directly for port at 6 mph, how long will it take it to reach port?
b. At what angle will the boat have to turn to head directly back to port in part a?