The angles of a triangle , two of whose ...

The angles of a triangle , two of whose sides are respresented by vectors `sqrt3 (hata xx vecb) and hatb - ( hata . Vecb)hata` where `vecb` is a non - zero vector and `veca` is a unit vector in the direction of `veca`. Are

A

`(pi)/(2), (pi)/(4), (pi)/(4)`

B

`(pi)/(2),(pi)/(3), (pi)/(6)`

C

`(pi)/(2), (5pi)/(12),(pi)/(12)`

D

`(pi)/(4),(pi)/(3),(5pi)/(12)`

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The correct Answer is:

B

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