If veca=hati+hatj + hatk and vecb = hati...

If `veca=hati+hatj + hatk and vecb = hati - 2 hatj+hatk` then find the vector `vecc` such that `veca.vecc =2 and veca xx vecc=vecb`.

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The correct Answer is:

`1/3(5hati + 2hatj + 2hatk)`

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