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If (veca xx vecb)xx vec c=veca xx (vecb...

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 angle of `pi/6` between them

B

Perpendicular

C

parallel

D

inclined at an angle of `pi/3` between them

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Verified by Experts

The correct Answer is:
C
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