A pilot sets out from an airport and heads in the direction N 20° E, flying at 200 mi/h. After one hour, he makes a course correction and heads in the direction N 40° E. Half an hour after that, engine trouble forces him to make an emergency landing. a. Find the distance between the airport and his final landing point correct to four decimal places. b. Find the bearing from the airport to his final landing point correct to four decimal places