The ceiling of an attic makes an angle of 30° with the floor. A pipe of radius

Question:

The ceiling of an attic makes an angle of 30° with the floor. A pipe of radius 2 inches is placed along the edge of the attic in such a way that one side of the pipe touches the ceiling and another side touches the floor (see Figure 17). What is the distance d from the edge of the attic to where the pipe touches the floor?
Figure 17