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If `(veca xx vecb)xx vec c=veca xx (vecb xx vec c)`, where `veca, vecb and vec c` are any three vectors such that `veca*vecb ne 0, vecb*vec c ne 0`, then `veca and vec c` are :

A

Inclined at an angle of `(pi)/(3)`

B

Inclined at an angle of `(pi)/(6)`

C

Perpendicular

D

Parallel

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Verified by Experts

The correct Answer is:
D
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