Mounting a projection unit The manufacturer of a computerized projection system recommends...

Mounting a projection unit The manufacturer of a computerized projection system recommends that a projection unit be mounted on the ceiling as shown in the figure on the next page. The distance from the end of the mounting bracket to the center of the screen is 85.5 inches, and the angle of depression is 30°.

(a) If the thickness of the screen is disregarded, how far from the wall should the bracket be mounted?

(b) If the bracket is 18 inches long and the screen is 6 feet high, determine the distance from the ceiling to the top edge of the screen.

EXERCISE