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Prove:-tan3x*tan2x*tanx=tan3x-tan2x-tanx

Answer» =tan3x=tan(2x+x)=tan3x=tan2x+tanx ------------------ 1-tan2x.tanxCROSS MULTIPLY WITH EACH OTHER=tan3x(1-tan2x.tanx)=tan2x+tanx=tan3x-tan3x.tan2x.tanx=tan2x+tanx=tan3x+tan2x+tanx=tan3x.tan2x.tanx {HENCE PROVED}


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