Question: Sir, I am stuck on this question (A) Let A, B and C are three points with co-ordinates (1,0,-1), (3,2,1) and (1,1,2) respectively. Determine (a)

Sir, I am stuck on this question

(A) Let A, B and C are three points with co-ordinates (1,0,-1), (3,2,1) and (1,1,2) respectively. Determine (a) AB and AC (b) A vector of magnitude 6 units parallel to vector AB (c) The scalar product of vectors AB and AC (d) The angle between vectors AB and AC

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