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सिद्ध कीजिएः (i) 2"sin"^(-1)3/5="tan"^...

सिद्ध कीजिएः
(i) `2"sin"^(-1)3/5="tan"^(-1)24/7` (ii) `"tan"^(-1)n/(n+1)-"tan"^(-1)(2n+1)=(3pi)/4`
(iii) `"sin"^(-1)3/5+"sin"^(-1)8/17="sin"^(-1)77/85` (iv) `"cos"^(-1)4/5+"cos"^(-1)12/13="cos"^(-1)33/65`

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