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सिद्ध करे कि 2(tan^(-1)""(1)/(4)+tan^(-1...

सिद्ध करे कि `2(tan^(-1)""(1)/(4)+tan^(-1)""(2)/(9))=cos^(-1)""(3)/(5)`.

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Show that : "tan"^(-1)(1)/(4) +"tan"^(-1)(2)/(9) = (1)/(2) "cos"^(-1)(3)/(5) .

Prove: tan^(-1)(1/4)+tan^(-1)(2/9)=sin^(-1)(1/sqrt(5))