Question: A cube is placed so that one comer is at the origin and three edges are along the x-, y-, and z-axes of a coordinate

A cube is placed so that one comer is at the origin and three edges are along the x-, y-, and z-axes of a coordinate system (Fig. 1.43). Use vectors to compute

(a) The angle between the edge along the z-axis (line ab) and the diagonal from the origin to the opposite comer (line ad), and

(b) The angle between line ac (the diagonal of a face) and line ad.

b, У

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