Please, I need help with part 3

A boat leaves port and follows a course of N74E at 10 knots for 3 hr and 30 min. Then, the boat changes to a new course of $26'E at 11 knots for 6 hr. Part 1 of 3 (a) How far is the boat from port? Round the answer to one decimal place if necessary. The boat is approximately 79.8 nmi from port. Part 2 of 3 (b) Suppose that the boat becomes disabled. How long will it take a rescue boat to arrive if the boat leaves from port and travels 19 knots? Round to the nearest minute. The rescue boat will arrive in approximately 4 hr 12 min. Part: 2 / 3 Part 3 of 3 (c) What course should the rescue boat follow? Round the answer to one decimal place if necessary. The rescue boat should follow the heading s 0 E X