1.

If hati+2hatj+3hatk, 3hati+2hatj+hatk are the sides of a parallelogram, then a unit vector is prallel to one of the diagonals of the parallelogram, is

Answer»

`(hati+hatk+hatk)/(SQRT3)`
`(hati-hatj+hatk)/(sqrt3)`
`(hati+hatj-hatk)/(sqrt3)`
`(-hati+hatk+hatk)/(sqrt3)`

ANSWER :A


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