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                                    If cosθ+2cosϕ+3cosΨ=sinθ+2sinϕ+3Ψ=0, then sin3θ+8sin3ϕ+27sin3ψ= | 
                            
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Answer»  If cosθ+2cosϕ+3cosΨ=sinθ+2sinϕ+3Ψ=0, then sin3θ+8sin3ϕ+27sin3ψ=  | 
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