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vec(AB)=3bari-barj+bark and vec(CD)= -3bari+2barj+4bark are two vectors. The position vectors of the points A and C are 6bari + 7barj + 4bark and -9bari + 2bark respectively. Find the position vector of a point P on the line AB and a point Q on the line CD such that vec(PQ) is perpendicular to vec(AB) and vec(CD) both. |
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