The two adjacent sides of a parallelogram are `2 hat i-4 hat j+5 hat k` and ` hat i-2 hat j-3 hat k` . Find the unit vector parallel to one of its diagonals. Also, find its area.

Explanation

Let, `veca` and `vecb` are two adjacent sides of a parallelogram.


`veca =2 hat i + 4 hat j -5 hat k`


`vecb= hat i +2 hatj + 3 hat k`


Let the diagonal be `vecc`
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