Vectors A and B lie in an xy plane. A has magnitude 7.3 and angle 131°; B has components Bx = -4.67 and By = -4.47. (a) What is 5A · B ? What is 4A x 3B in unit-vector notation ((b), (c) and (d) for i, j and k components respectively)? (e) What is the angle between the directions of A and 4A x 3B ? What is A + 3.00k in unit-vector notation ((f), (g) and (h) for i, j and k components respectively) and magnitude-angle notation with spherical coordinates ((i) for magnitude, (j) for θ and (k) for φ)?