If vectors vecA and vecB are 3 ha...

If vectors ` vecA and vecB ` are ` 3 hati - 4 hatj + 5 hatk ` and ` 2 hati + 3 hatj - 4hatk` respectively then the unit vector parallel to ` vecA + vecB `

A

`((5i-j+k))/(sqrt(27))`

B

`((5i+j+k))/(sqrt(27))`

C

`((5i+j+k))/(27)`

D

`((5i-j-k))/(27)`

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The correct Answer is:

A

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