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

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0

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1

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2

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3

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AAKASH SERIES-DEMOIVRE'S THEOREM-PRACTICE EXERCISE
  1. If cos alpha+cos beta+cos gamma=0 & sin alpha +sin beta +sin gamma=0. ...

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  2. If cos alpha+cosbeta+cosgamma = 0 = sinalpha + sinbeta + singamma then...

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  3. If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma then sin(2alp...

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  4. If cosalpha+cosbeta+cosgamma=0=sin alpha+sinbeta+singamma then cos^2al...

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  5. If cosalpha+coabeta+cosgamma=0=sinalpha+sinbeta+singamma then cos(alph...

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  6. If a=cisalpha,b=cisbeta,c=cisgamma, and a/b+b/c+c/a-1=0 then cos(alph...

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  18. IF omega represents a complex cube root of unity, then (1+1/omega)(1+1...

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