1.

If bar(i)+2bar(j)+3bar(k), 3bar(i)+2bar(j)+bar(k) are sides of a parallelogram then a unit vector parallel to one of the diagonals of the parallelogram is

Answer»

`(BAR(i)+bar(j)+bar(K))/sqrt(3)`
`(bar(i)-bar(j)+bar(k))/sqrt(3)`
`(bar(i)+bar(j)-bar(k))/sqrt(3)`
`(-bar(i)+bar(j)+bar(k))/sqrt(3)`

Answer :A


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