A 6-ft-tall person walks directly away from a 15-ft-tall streetlamp at a constant…

MATHEMATICS · Subjective · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

A 6-ft-tall person walks directly away from a 15-ft-tall streetlamp at a constant speed of 3 ft/s. Determine the rate, in ft/s, at which the length of the person’s shadow is increasing when the person is 10 ft from the base of the streetlamp.

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