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find the unit vector in the direction of...

find the unit vector in the direction of 'PQ' where P and Q are the points (1,2,3) and (4,5,6).

Text Solution

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The correct Answer is:
`hat(PQ)=(vec(PQ))/(|vec(PQ)|)=(1)/(sqrt(3))(hat(i)+hat(j)+hat(k))`
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