Visual angle of an approaching object
The visual angle (AKA angular size) of an object depends on how far away the object is. The passenger jet shown below has a wingspan of 200 feet. You can move the jet by dragging the red diamond on its back.
Suppose a jet with a wingspan of 200 feet is approaching you. Its visual angle is 1.5 degrees, and the angle is increasing by one tenth of a degree per second. How far away is the jet, and how fast is it moving?