of (A+B+C) = 360 then Tana Tan Bata...
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of (A+B+C) = 360 then Tana Tan Batang-

JEE/Engineering Exams
Maths
Solution
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[ frac{A}{2}+frac{B}{2}+frac{C}{2}=180 ] ( tan left(frac{A}{2}+frac{R}{2}+frac{C}{2}right)=0 ) Expand it T) ( tan frac{A}{2}+tan frac{R}{2}+tan frac{C}{2} pm tan frac{A}{2} cdot tan ^{8} frac{2}{2}+tan frac{B}{2}-tan frac{C}{2} ) ( +tan frac{c}{2} cdot tan frac{A}{2}+tan frac{A}{2} cdot tan frac{B}{2} cdot tan frac{c}{2} )
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