If `cosalpha+cosbeta+cosgamma=sinalpha+sinbeta+singamma=0`, then the value of `cos3alpha+cos3beta+cos3gamma` is

If cosalpha+2cosbeta+3cosgamma=sinalpha+2sinbeta+3singamma=0 then the value of sin 3alpha+8sin3beta+27sin 3gamma , is

If (cosalpha+cosbeta+cosgamma)=0, sinalpha+sinbeta+singamma=0 then show that cos3alpha+cos3beta+cos3gamma=3cos(alpha+beta+gamma)

If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma" then "cos3alpha+cos3beta+cos3gamma

If cosalpha+cosbeta+cosgamma=0a n da l sosinalpha+sinbeta+singamma=0, then prove that cos2alpha+cos2beta+cos2gamma =sin2alpha+sin2beta+sin2gamma=0 sin3alpha+sin3beta+sin3gamma=3sin(alpha+beta+gamma) cos3alpha+cos3beta+cos3gamma=3cos(alpha+beta+gamma)

If (cosalpha+cosbeta+cosgamma)=0, sinalpha+sinbeta+singamma=0 then show that sin3alpha+sin3beta+sin3gamma=3sin(alpha+beta+gamma)

If sinalpha + sinbeta + singamma = 3 , then cosalpha + cosbeta + cosgamma equals :

If cosalpha+cosbeta+cosgamma=0=sin alpha+sinbeta+singamma then cos^2alpha+cos^2beta+cos^2gamma=

If cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+singamma, then match the following. {:("I) "cos3alpha+cos3beta+cos3gamma=,"a) "0),("II) "sin2alpha+sin2beta+sin2gamma=,"b) "3),("III) "cos^2alpha+cos^2beta+cos^2gamma=,"c) "3//2),("IV) "cos(2alpha-beta-gamma)+cos(2beta-gamma-alpha)+cos(2gamma-alpha-beta)=,"d) "3cos(alpha+beta+gamma)):}

If cosalpha+cosbeta+cosgamma=0 a n d a l so sinalpha+sinbeta+singamma=0, then prove that cos2alpha+cos2beta+cos2gamma =sin2alpha+sin2beta+sin2gamma=0 sin3alpha+sin3beta+sin3gamma=3sin(alpha+beta+gamma) cos3alpha+cos3beta+cos3gamma=3cos(alpha+beta+gamma)