In any `DeltaABC,` prove that, `(sumcot(A /2))/(sumcotA)=((a+b+c)^2)/(a^2+b^2+c^2).`
8 views · Published 13 October 2018 · 7:16 · Indexed 4 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW In any `DeltaABC,` prove that, `(sumcot(A /2))/(sumcotA)=((a+b+c)^2)/(a^2+b^2+c^2).`
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