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Let veca,vecb and vecc be non-zero vecto...

Let `veca,vecb` and `vecc` be non-zero vectors such that no two are collinear and
`(vecaxxvecb)xxvecc=1/3|vecb||vecc|veca`
If `theta` is the acute angle between the vectors `vecb` and `vecc` then `sin theta` equals

A

`(2sqrt(2))/(3)`

B

`(sqrt(2))/(3)`

C

`(2)/(3)`

D

`(1)/(2)`

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