Mathematics, 24.03.2021 06:10 310000982

a video camera at ground level is taping the release and rise of a water balloon. the camera is located 500m away from the release point. as the balloon rises, the camera operator observes that when the angle of elevation between the camera and the balloon is pi/4 radians, the angle of elevation is increasing at a rate of 0.2 rad/sec. how fast is the balloon rising at this time?

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