Given that cm, cm, cm, and cm, find the numerical value of .
The bisector of an exterior angle of a triangle intersects an
extension of the opposite side of the triangle. The ratio of the
length of the opposite side plus the extension to the length of
just the extension is equal to the ratio of the lengths of the
other two sides of the triangle. Therefore, since bisects the
exterior angle adjacent to in , and is an extension of side
of the triangle, solve for the numerical value of as follows:
Thus, the numerical value of is 53.