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If vec a xx vec b=vecb xx vec c !=0, wh...

If `vec a xx vec b=vecb xx vec c !=0`, where `veca, vec b and vec c` are coplanar vectors, then for some scalar k

A

`a+c= kb`

B

`a+d= kc`

C

`b+c= ka`

D

None of these

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The correct Answer is:
A
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