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1. Suppose u = 2i + 6j + 2k and v = 8i + 9j - 3k, then find: a. Find the angle between

1. Suppose u = 2i + 6j + 2k and v = 8i + 9j - 3k, then find: a. Find the angle between u and v b. Show that A x B is perpendicular to both A and B (Mark 1)

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