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Find a vector a that has the same direction as (-6, 3, 6) but has length 4. Answer: a = (1 point) Find the

Find a vector a that has the same direction as (-6, 3, 6) but has length 4. Answer: a = (1 point) Find the angle between the vectors a = 6i- j - 4k and b = 27 + j5k. Answer (in radians): 0 =

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