1.

If e is unity vector perpendicular to the planedetermined by the points2hati + hatj + hatk , hati - hatj + hatk - hatj + hatk and- hati + hatj - hatk. Ifa = 2 hati-3 hatj + 6 hatk , then the projection vector of a on e is

Answer»

`11/14 ( - 2 hati + hatj + 3 hatk) `
`1/3 (hati - 2hatj+ 2hatk)`
`1/7 (2hati - 3hatj + 6hatk)`
`(1)/(SQRT14) (2 hati - hatj + 3 hatk)`

ANSWER :A


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