what is the formula for a right triangle
As a formula the area T is. where a and b are the legs of the triangle. If the incircle is tangent to the hypotenuse AB at point P, then denoting the semi-perimeter (a + b + c) / 2 as s, we have PA = s â a and PB = s â b, and the area is given by. This formula only applies to right triangles.