1.

Find unit vector orthogonal to the vector 3bari + 2barj + 6bark and coplanar with the vectors 2bari + barj+bark and bari - barj + bark.

Answer»

`1/(sqrt(41))(2bari-6barj+bark)`
`1/(sqrt(13))(2bari-3barj)`
`1/(sqrt(10))(3barj-bark)`
`1/(sqrt(10))(3bari+barj)`

Answer :A


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