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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)):} |
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Answer» A) d,a,C,b |
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