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If vec(a), vec(b), vec(c) and vec(d) are...

If `vec(a), vec(b), vec(c) and vec(d)` are unit vector such that `(vec(a) xx vec(b)).(vec(c) xx vec(d))=1 and vec(a).vec(c)= (1)/(2)`, then

A

`vec(a), vec(b), vec(c)` are non-coplanar

B

`vec(b), vec(c), vec(d)` are non-coplanar

C

`vec(b), vec(d)` are non-parallel

D

`vec(a), vec(d)` are parallel and `vec(b), vec(c)` are parallel

Text Solution

Verified by Experts

The correct Answer is:
C
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