Q. 125.0( 1 Vote )

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are and respectively, externally in the ratio 1 : 2. Also, show that P is the mid-point of the line segment RQ.

Answer :

The position vector of the point R dividing the joint of P and Q externally in the ratio 1:2 is

Midpoint of the line segment RQ is

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