if ` tan^-1 a + tan^-1 b +tan^-1 c = pi` then prove that `a+b+c = abc`
735 views · Published 12 October 2018 · 2:46 · Indexed 28 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW if ` tan^-1 a + tan^-1 b +tan^-1 c = pi` then prove that `a+b+c = abc`
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