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Given that position vectors of points A and B are a = vector of point a and b = vectors of point b and C is a point on AB such that AC : CB = 1 : 2. Find the coordinates of the point C.

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OC = OA + AC
position vector coordinates
OC = OA + 1/3AB
  = a + 1/3a + b)
 =2/3a + 1/3b
answer to position coordinates vector
∴ C(−4/3, 3)

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