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If veca,vecb,vecc be non coplanar vector...

If `veca,vecb,vecc` be non coplanar vectors and `vecp=(vecbxxvecc)/([veca vecb vecc])`, `vecq=(veccxxveca)/([veca vecb vecc])`, `vecr=(vecaxxvecb)/([veca vecb vecc])` then (A) `vecp.veca=1` (B) `vecp.veca+vecq.vecb+vecr.vecc=3` (C) `vecp.veca+vecq.vecb+vecr.vecc=0` (D) none of these

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