In the figure below, a and b are the position vectors of points A and B respectively. K is a point on AB such that the...

      

In the figure below, a and b are the position vectors of points A and B respectively. K is a point on
AB such that the AK:KB = 1:1. The point R divides line OB in the ratio 3:2 and point S divides OK in
the ratio 3:1.
fig2529320191115.png

(a) Express in terms of a and b
(i) OK (iii) RS
(iii) OS (iv) RA
(b) Hence show that R,S and A are collinear.

  

Answers


Kavungya
fig2629320191119.png
Kavungya answered the question on March 29, 2019 at 08:19


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