Is there any relation between circumradius, inradius and the angles associated with a triangle? Any help will be appreciated.
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$r=4R\sin (\frac {A}{2})\sin (\frac {B}{2})\sin (\frac {C}{2}) $ where $r,R $ are inradius and circumradius respectively
Archis Welankar
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Proof of the above statement. – Chandramauli Chakraborty Jun 01 '17 at 14:10
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It can easily be found on the site – Archis Welankar Jun 01 '17 at 14:20