vectors

Question: The vector that must be added to the vector $\hat i - 3\hat j + 2\hat k$ and $3\hat i + 6\hat j - 7\hat k$ so that the resultant vector is a unit vector along the y-axis is



1) $4\hat i + 2\hat j + 5\hat k$
2) $ - 4\hat i - 2\hat j + 5\hat k$
3) $3\hat i + 4\hat j + 5\hat k$
4) Null vector
Solution: Explanation: Explanation
fundamental-of-vectors

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