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3. Let u and v be two nonzero vectors in R2. Suppose that ju| = [v| = [utv) = 1. (a) Use dot products to

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3. Let u and v be two nonzero vectors in R2. Suppose that ju| = [v| = [utv) = 1. (a) Use dot products to find the angle between u and v. (b) Consider a rhombus ABCD for which AB = u and AD = v (draw a picture). Find the length of the two diagonals |AC| and |BDI

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