Question

if abc are the sides of a right triangle where c is the hypotaneuse, prove that the radius r of the circle which touches the sides of the tringle is given by r= a+b+c/2​

Answer 1

If a, b, c are the sides of a right angled triangle, where c is hypotenuse, then prove that the radius r of the circle which touches the sides of the triangle is given by r=2a+b−c.