Question: 11. a) Find out if the points A(0, 1, 2), B(-1, 1, -2), and C(-2, 3, -2) are collinear or not. b) Find if the

11. a) Find out if the points A(0, 1, 2), B(-1, 1, -2), and C(-2, 3, -2) are collinear or not. b) Find if the points P(0, 1, 2), Q(-1, 2, -3), and R(-3, 4, -13) are collinear or not. 12. Given lal = 8, b = 12, and a + b = 16, find the angle 0 = 4(a,b) (the angle between the vectors a and b when they are positioned tail to tail)

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