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The points A, B and C with position vectors veca, vecb and vec c respectively lie on a circle centered at origin O. Let G and E be the centroid of DeltaABC and DeltaACD respectively where D is mid point of AB. Q.If[vec(AB) vec(AC) vec(AB) xxvec(AC)]=lambda[vec(AE) vec(AG) vec(AE) xx vec(AG)], then the value of lambda is : |
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Answer» -18 |
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