A forest ranger is watching the progress of a forest fire spreading towards her from the top of a 3790-foot mesa. In 2 minutes, the angle of depression to the leading edge of the fire changes from 10.47∘ to 12.54∘. (a) How many feet does the fire advance during the 2 minutes that the ranger is observing it?

(b) At what speed (in MILES PER HOUR) is the fire spreading towards the ranger?

42

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step-by-step explanation:

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