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? The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is

2i^ - 2j^ + k^

(2i^ - 2j^ +k^)/9

(2i^ - 2j^ +k^)/3

(2i^ - 2j^ +k^)/5

Answer: C . (2i^ - 2j^ +k^)/3
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