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An airplane, flying at a constant speed of 360 mi/hr and climbing at a 30 degree angle, passes over a point P on the ground

An airplane, flying at a constant speed of 360 mi/hr and climbing at a 30 degree angle, passes over a pointPon the ground at an altitude of15,840ft.Find the rate (in miles per hour) at which its distance fromPis changingone minutelater.

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