Q. 24.3( 65 Votes )

Find a unit vecto

Answer :


Given that
and

Let




Let




Now, we want to find a vector which is perpendicular to both and . It is given by .


Let



Expanding along first row,





Therefore,


Now we want to find the unit vector. We know that unit vector means that the magnitude of the vector is 1(unit).


It is defined as


So, we find the magnitude of first.




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