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Algebra

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4 Feb 2010 14:56:30 IST

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Let ABC be a triangle and a circle 'R' be drawn lying inside the triangle, touching its incircle 'r'

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Let ABC be a triangle and a circle 'R' be drawn lying inside the triangle, touching its incircle 'r' externally and also touching the two sides AB and AC. What is the ratio of radii of the circles 'R' and 'r' ?

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SRIJAN MISHRA

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Joined: 2 Feb 2010

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8 Feb 2010 12:00:21 IST

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R/r = 1 - sin(A /2) / 1 + sin(A/2)

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