Airplanes A and B are flying at the same altitude and are tracking the eye of hurricane C. The relative velocity of C with respect to A is Vc/a = 350 km/h (75 degrees), and the relative velocity of C with respect to B is Vc/b = 400 km/h (40 degrees). Determining (a) the relatve velocity of B with respect to A, (b) the velociy of A if ground-based radar indicates that the hurricane is moving at a speed of 30 km/h due north, (c) the change in position of C with respect to B during a 15 minute interval.