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If vec a xx vec b = vec c and vec b xx v...

If `vec a xx vec b = vec c` and `vec b xx vec c = vec a` then

A

`|vec a| = 1, vec b = vec c`

B

`|vec c| =1, |vec a| =1`

C

`|vec b| = 2, vec c = 2 vec a`

D

`|vec b| = 1, |vec c| = |vec a|`

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The correct Answer is:
D
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