1. Do as directed? a. The magnitude and direction of V = (-4V3, -12,) b. What is the angle, to the nearest degree, that the vector (3, 6, -9) c. Work out the torque and the angle, ifr = (2v3, 7, 11) and f = (7, 10, -3 ) d. Prove that a x b = -b x a in R3 (three dimensions)