prove that:

where are the sides opposite to the angles respectively in a triangle

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- August 11th 2010, 06:22 AMgrgrsanjaysolutions of a triangle
prove that:

where are the sides opposite to the angles respectively in a triangle - August 11th 2010, 06:53 AMsimplependulum
Let be the points of tangency of the incircle to the sides respectively .

Then where is the inradius .

Also ,

But

Therefore ,

or - August 11th 2010, 07:41 AMgrgrsanjayQuote:

Originally Posted by**simplependulam to grgrsanjay;**

what does tangency to a circle mean actually??? - August 11th 2010, 07:54 AMskeeter