1.

A unit vector in the plane of the vectors 2bari +barj+bark, bari - barj+ bark and orthogonal to 5bari +2barj +6bark is

Answer»

`(6bari-6bark)/(sqrt(61))`
`(3barj-bark)/(sqrt(10))`
`(2bari-5barj)/(sqrt(29))`
`(2bari+barj-2bark)/3`

ANSWER :B


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