Vectors A & B lie in an xy plane. A has magnitude 8.00 and angle 130°; B has components Bx = -7.72 and By= -9.2 (a) What is 5A ⋅ B What is 4A × 3B in (b) unit-vector notation and (c) magnitude-angle notation with spherical coordinates (see Fig.)? (d) What is the angle between the direction of A and 4A × 3B? What is A + 3.00k̂ in (e) unit vector notation and (f) magnitude-angle notation with spherical coordinates?