An airplane flies at an altitude of a = 6 miles towards a point directly over an observer. Consider and x as shown in the following figure. The speed of the plane is 400 miles de hour. Find when x= 10. Round your answer to three decimal places. dt AA 4 O-17.647 rad/hr O2.941 rad/hr O 17.647 rad/hr O 0.044 rad/hr O-8.824 rad/hr K a mi 4

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