The 2 vectors hat"j" + hat"k" and 3hat"i" - hat"j" + 4hat"k" represents the two sides AB and AC, respectively of a ∆ABC. The length of the median through A is ______.

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The 2 vectors hat"j" + hat"k" and 3hat"i" - hat"j" + 4hat"k" represents the two sides AB and AC, respectively of a ∆ABC. The length of the median through A is sqrt(34)/2. Explanation: Median vec"AD" is given by `|vec"AD"| = $\frac{1}{2}$ |3hat"i" + hat"j" + 5hat"k"| = sqrt(34)/2`

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