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Question

If the vectors a,b, c are non-coplanar then the vectors a×b,b×c, c×a are

A
Coplanar
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B
Non-coplanar
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C
Orthogonal
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D
Collinear
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Solution

The correct option is B Non-coplanar
Let given vectors are collinear then,
[a×b b×c c×a]=0
=(a×b×b×c)c×a=([abc]b0)c×a
=[abc]2
So,
[a×b b×c c×a]0 as [abc]0
Thus a b c are Non-coplanor.

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