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

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

    • Posted by Nischay Sutariya 7 years, 5 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Srehansu Barik 5 years, 8 months ago

    =tan3x=tan(2x+x) =tan3x=tan2x+tanx ------------------ 1-tan2x.tanx CROSS 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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