A ladder of leng B th 10m is leaning against a wall making an angle of 600 with the horizontal plane. It touches the wall at point A. If the ladder is rearranged in a way that it leans against the wall making an angle 300 with the horizontal plane, it touches the wall at point B. Find the length of AB.

A ladder of length 10m is leaning against a wall making an angle of 600 with the horizontal
plane. It touches the wall at point A. If the ladder is rearranged in a way that it leans
against the wall making an angle 300 with the horizontal plane, it touches the wall at point
B. Find the length of AB.