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let veca, vecb and vecc be three unit ve...

let `veca, vecb` and `vecc` be three unit vectors such that `veca xx (vecb xx vecc) =sqrt(3)/2 (vecb + vecc)`. If `vecb` is not parallel to `vecc`, then the angle between `veca` and `vecb` is:

A

`(pi)/4`

B

`pi/3`

C

`(2pi)/3`

D

`(5pi)/6`

Text Solution

Verified by Experts

The correct Answer is:
D
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