A forest ranger is watching the progress of a forest fire spreading towards her from the top of a 3740-foot mountain. In 12 minutes, the angle of depression to the leading edge of the fire changed from 0.83 radians to 1.16 radians. angle of : depression a. How many feet does the fire advance during the 12 minutes the ranger observed the fire? feet Preview b. At what speed (in feet per minute) is the fire spreading towards the ranger? feet per minute Preview