Question: A television camera at ground level is filming the lift-off of a rocket at a point 800 meters from the launch pad. Let be the

A television camera at ground level is filming the lift-off of a rocket at a point 800 meters from the launch pad. Let be the angle of elevation of the rocket and let s be the distance between the camera and the rocket (see figure). Write θ as a function of s for the period of time when the rocket is moving vertically. Differentiate the result to find dθ/dt in terms of s and ds/dt.

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