(P1.5) Let A = -2ax + 5ay + az, B = ax + 3az, and C = 4ax -6ay +10az.......

(P1.5) Let A = -2ax + 5ay + az, B = ax + 3az, and C = 4ax -6ay + 10az.

(a) Determine A - B + C

(b) Find A . (B x C)

(c) Calculate the angle between A and B

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