Angle of elevation A small plane, moving at 70 m/s, flies
Chapter 3, Problem 36(choose chapter or problem)
Angle of elevation A small plane, moving at 70 m/s, flies horizontally on a line 400 meters directly above an observer. Let u be the angle of elevation of the plane (see figure). a. What is the rate of change of the angle of elevation du>dx when the plane is x = 500 m past the observer? b. Graph du>dx as a function of x and determine the point at which u changes most rapidly.
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