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If vec a=7 hat i-4 hat j-4 hat k and ve...

If ` vec a=7 hat i-4 hat j-4 hat k` and `vec b=-2 hat i- hat j+2 hat k ,` determine vector ` vec c` along the internal bisector of the angle between of the angle between vectors ` vec a and vec b` such that `| vec c| =5sqrt(6)`

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