Determine the vector which when added to the resultant of `vec(A) =2hati - 4hatj - 6hatk

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Determine the vector which when added to the resultant of `vec(A) =2hati - 4hatj - 6hatk` and `vec(B) = 4hati +3hatj + 3hatk` gives the unit vector along z-axis.
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Sir you had made a mistak when u substract resultant vector from K cap you just subracted the last as it you should to correct and re-upload the solution 🙏

alankhanyt