find the center of circle with radius R and tangent by sides AB and BC of triangle?


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Question Number 116520 by kaivan.ahmadi last updated on 04/Oct/20

$f i n d t h e c e n t e r o f c i r c l e w i t h r a d i u s R$ $a n d t a n g e n t b y s i d e s A B a n d B C o f$ $t r i a n g l e ?$
	Answered by $@y@m last updated on 04/Oct/20

	$T h e c e n t r e o f t h e c i r c l e i s I n c e n t r e o f$ $△ A B C a n d r a d i u s o f c i r c l e i s g i v e n b y$ $R = \frac{△}{s}$ $w h e r e △ = A r e a o f △ A B C$ $a n d s = s e m i p e r i m e t e r$
	Commented by $@y@m last updated on 04/Oct/20

	$S o r r y . I j u s t r e m e m b e r t h e f o r m u l a$ $r e a d i n m y t e x t b o o k .$ $I {d o n}^{'} t r e m e m b e r t h e p r o o f .$ $P l e a s e g o t h r o u g h t h e c o n c e p t o f I n c i r c l e$ $i n y o u r t e x t b o o k .$
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