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Prove that tan3xtan2xtanx = tan3x-tan2x-tanx

Answer» Nice explained Priya
Nice
3x=2x+xHence use tan3x formula1.Tan3x=tan2x+tanx/1-tan2xtan3x.2.Tan3x-tan3x.tan2xtanx=tan3x+tanx3.tan3x-tan2x-tanx=tan3x.tan2x.tanxHence proved
I think in example
Hey ,It is clear given in RD sharma book


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