Entry Test MCQ :: Vectors And Equilibrium

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

[A].	2i^ - 2j^ + k^	[B].	(2i^ - 2j^ +k^)/9
[C].	(2i^ - 2j^ +k^)/3	[D].	(2i^ - 2j^ +k^)/5

Answer: Option C