Question: Let V = (-2,,5), W = (3,-2, 7) be two vectors of R (a) Find the cosine of the angle a between V andW.

Let V = (-2,,5), W = (3,-2, 7) be two vectors of

Let V = (-2,,5), W = (3,-2, 7) be two vectors of R (a) Find the cosine of the angle a between V andW. Justify your answers (b) Determine ||V + W2 + ||V- W and 2(||V4 +W) and compare them. Justify your answers. (c) Find a united vector in the direction of V and a unit vector in the opposite direction of W. Justify your answers. (d) Determine |V +W--V-W and V. W and compare them. Justify your answers.

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