Find the unit vector in the direction...

Find the unit vector in the direction of the vector ` vec a= hat i+ hat j+` 2` hat k` .

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Unit vector `hata = (veca)/(|veca|)`
Given `veca = hat i+ hat j+2 hat k`
now , `|veca| = sqrt( 1^2 +1^2 +2^2)`
`= sqrt6`
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