If `(vecaxxvecb)xx(vecbxxvecc)=vecb, where veca,vecb and vecc` are non zero vectors then (A) `veca,vecb and vecc can be coplanar (B) `veca,vecb and vecc` must be coplanar (C) `veca,vecb and vecc cannot be coplanar (D) none of theseA. `veca,vecb and vecv` can be coplanarB. `veca, vecb and vecc` must be coplanarC. `veca,vecb and vecc` cannot be coplanarD. none of these

If `(vecaxxvecb)xx(vecbxxvecc)=vecb, where veca,vecb and vecc` are non

1.	If `(vecaxxvecb)xx(vecbxxvecc)=vecb, where veca,vecb and vecc` are non zero vectors then (A) `veca,vecb and vecc can be coplanar (B) `veca,vecb and vecc` must be coplanar (C) `veca,vecb and vecc cannot be coplanar (D) none of theseA. `veca,vecb and vecv` can be coplanarB. `veca, vecb and vecc` must be coplanarC. `veca,vecb and vecc` cannot be coplanarD. none of these
Answer» Correct Answer - c `(veca xx vecb) xx (vecb xx vecc) = vecb` ` or [veca vecb vecc] vecb = vecb` ` or [veca vecb vecc] =1 ` therefore, `veca , vecb and vecc` cannot be coplanar.

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