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Please, help me... If tan^-1x + …

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Please, help me... If tan^-1x + tan^-1y = tan^-1{(x+y)/(1-xy)}, then 2tan^-1x + tan^-1y=?

    • Posted by Tamoghna Roy 7 years, 6 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Ajin Sreekumar 7 years, 6 months ago

    Tan-1[(2x/1-x^2)+y]\1-(2x^2Xy/1-x2)

    1Thank You

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