1.

The unit vector in ZOX-plane making angles 45^(@) and 60^(@) " respectively with " bara = 2bari+2barj-bark and barb= barj-bark is

Answer»

`1/SQRT2(-bari+2bark)`
`1/sqrt2(bari-bark)`
`1/(3sqrt2)(bari+2bark)`
`1/(sqrt2)(bari+bark+barj)`

ANSWER :B


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