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

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

A

0

B

1

C

`cos2(alpha+beta+gamma)`

D

`3cos(alpha+beta+gamma)`

Text Solution

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