A man is standing on the street outside of a tall building. A girl is standing at a window up on the third floor of the building. Here are two facts about the situation:

1.  The angle from the man on the street up to the girl in the window is 60°.

2.  The horizontal distance from the man on the street to the point directly underneath the girl is 5,2 m.

Calculate the vertical distance from the girl to the point directly below her.