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सिद्ध करें कि: `tan^(-1)sqrt(x) = (1)/(2) cos^(-1)((1-x)/(1+x)), x in[0, 1]` |
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Answer» `tan^(-1)sqrt(x) = (1)/(2)(2 tan^(-1)sqrt(x))` ` = (1)/(2) cos^(-1)((1-x)/(1+x))[because tan^(-1) x = cos^(-1)""(1-x^(2))/(1+x^(2)),xge0]` |
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