Question: b) Find the angle between u and w. Give your answer as a (rational) multiple of r in radians.c) Find a vector that is perpendicular

b) Find the angle between u and w. Give your answer as a (rational) multiple of r in radians.c) Find a vector that is perpendicular to both u and w.

Let t be a positive real number, and let u, v and w be the vectors u = 2j V11 V = 4 K . 2t 1k , w = li Let 0 be the angle between u and v. Determine cos(0) as a function of t

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