Q. 84.5( 50 Votes )

# Find the unit vector in the direction of vector where P and Q are the points (1, 2, 3) and (4, 5, 6), respectively.

Answer :

So, and

Now we want to find the

Now, we have to find the unit direction in the direction of .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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