In the adjoining figure, if AD is the bisector of ∠A, what is AC?
Given AD is the bisector of ∠A in ΔABC. Let AC be x cm.
We know that the angle bisector theorem states that the internal bisector of an angle of a triangle divides the opposite side in two segments that are proportional to the other two sides of the triangle.
⇒ x = 4 cm
∴ AC = 4 cm