1.

If bara = 2hati + 3hatj - hatk, barb = hati + 2hatj - 5hatj, barc = 3hati + 5hatj - hatk, then a vector perpendicular to bara and lies in the plane containing barb and barc is………….

Answer»

`-17hati + 21hatj - 97hatk`
`-17hati + 21hatj - 122 HATK`
`-17hati - 21hatj + 97 hatk`
`-17hati - 21hatj - 97 hatk`

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