Vector u = P0 has initial point P {3. 1?] and terminal point 0 (Q. 2}. Vector I = R5 has inilial point .Fl [3!], E} and terminal point 3 (a, 13}. Part A: Write u and 1r in linear form. Show all necessary work. {4 points} Part 3: Write u and v in trigonomelrio form. Show all necessary work. {a points} Part :3: Find ?u 49. Show all necessary calculations. (3 points} Vectors t = -5i + 2j, u = -3i + 7j, and v = 8i + 20j are given. Part A: Find the angle between vectors t and u. Show all necessary calculations. (5 points) Part B: Choose a value for c, such that c > 1. Find w = cv. Show all necessary work. (2 points) Part C: Use the dot product to determine if t and w are parallel, orthogonal, or neither. Justify your answer. (3 points)