2. [Maximum mark: I I] Two cars, A and B, are traveling at 60 kmfh and T0 kmfh respectively, on straight roads, as shown in the diagram below. The two roads intersect at the point D and the angle between the roads is 60\" At a given instant both cars are 5 km away from ID. Find {a} The rate of change of the distance between the cars. at that instant. [6 marks] (1}) The rate of change of the angle 6 = GAB at that instant. {5 marks}