If cosalpha+cosbeta+cosgamma=0=sinalpha+...

If `cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma` then `cos(2alpha-beta-gamma)+cos(2beta-gamma-alpha)+cos(2gamma-alpha-beta)=`

A

3

B

2

C

1

D

0

Verified by Experts

The correct Answer is:

A

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