Question 1 (Essay Worth 15 points) (07.02, 07.03 HC) Vector u = PQ has initial point P (5, 16) and terminal point Q (8, 4). Vector v = RS has initial point R (28, 7) and terminal point S (10, 16). Part A: Write u and v in linear form. Show all necessary work. (4 points) Part B: Write u and v in trigonometric form. Show all necessary work. (8 points) Part C: Find 7u - 4v. Show all necessary calculations. (3 points)