1.

Let veca = hati + hatj + hatk, vecb = hati - ahtj + hatk and hati - hatj - hatkbe three vectors. A vector vecv in the plane of veca and vecb, whose projection on vecc is (1)/(sqrt3), is given by :

Answer»

`4i-j+4k`
`i+j-2k`
`4i+j-4k`
`3i+j-3k`

ANSWER :A


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