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Theree coplanar vectors vecA,vecB and ve...

Theree coplanar vectors `vecA,vecB` and `vecC` have magnitudes 4.3 and 2 respectively. If the angle between any two vectors is `120^(@)` then which of the following vector may be equal to `(3vecA)/(4)+(vecB)/(3)+(vecC)/(2)`

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