If and are the position vectors of the points A and B , then the position vector of the points of trisection of AB are 

a) 

b) 

c) 

d) 
If and are the position vectors of the points A and B , then the position vector of the points of trisection of AB are 

a) 

b) 

c) 

d) 
(a)
Let
Let point divide in the ratio 1:2
Again let point divides in the ratio 2:1, then
So, position vector of the points of trisection of are position vector of
and position vector of