Mathematics, 25.11.2021 15:30 nicolecadet941

In any triangle ,prove that asin A + bsin B +csinC/cosA+cosB+cosC=R(a^2+b^2+c^2 )/abc

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In any triangle ,prove that asin A + bsin B +csinC/cosA+cosB+cosC=R(a^2+b^2+c^2 )/abc...

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