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2. Given vectors u = 31 - 2j - k and B = (2, -2, 1) and points A(4, -2, 3) and B(5, 4, -2),

2. Given vectors u = 31 - 2j - k and B = (2, -2, 1) and points A(4, -2, 3) and B(5, 4, -2), find if possible: (K 12) a) |2u + 30| b) the angle between u and i c) the angle between AB and the z axis Page 1 of 3

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