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If vectors vec A B=-3 hat i+4 hat ka n ...

If vectors ` vec A B=-3 hat i+4 hat ka n d vec A C=5 hat i-2 hat j+4 hat k` are the sides of a`"Delta"A B C ,` then the length of the median through `Ai s` a. `sqrt(14)` b. `sqrt(18)` c. `sqrt(29)` d. `sqrt(5)`

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