4. A 17 ft long ladder is leaning against a vertical wall. A winch on the top of the building is lowering the top of the ladder making the base of the ladder slide away from the building (yes, not a very good ladder for it to slip like this). The winch is lowering the top of the ladder at a rate of 1.5 ft/s. How fast is the angle between the ladder and the ground changing when the top of the ladder is 8 ft from the ground? Although this is a related rates problem (follow all related rates problem solving steps), your goal will be to solve for the angle of which you want the rate before taking any derivatives.
In this question we have find the rate of change of angle between ground and the ladder using trigonometry and differentiation. Hope you understand the solution.
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