How fast is the plane traveling at that time

Reference no: EM13199409

A plane flies horizontally at an altitude of 5 km and passes directly over a tracking telescope on the ground. When the angle of elevation is π/3, this angle is decreasing at a rate of π/6 rad/min. How fast is the plane traveling at that time? (Round your answer to two decimal places.)

Reference no: EM13199409

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