Question

1. Three vectors are expressed as a = 4i - i, b = -3i + 2j and c=-k where i,j,k are unit vectors,
along the X,Y and Z axis respectively. The unit vectors r along the direction of sum of these
vector is
(A)r=1/w3 (i+j-4) (B) r = 1/v2 (i+j-k) (C) r= 1/3 (-j+k) (D) r = 1/V2 (i+j+k).
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Answer 1

Answer:

Answer is B

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