I am really struggling now that I reached related rates in calculus. But I really need to know the why's also, not just the answer. I know part of it is it's been 27years since I was in school.

first question: A 6-ft man walks away from a 16-ft lamppost at a speed of 5 ft/s. Find the rate at which his shadow is increasing in length.

Question

I am really struggling now that I reached related rates in calculus. But I really need to know the why's also, not just the answer. I know part of it is it's been 27years since I was in school.

first question: A 6-ft man walks away from a 16-ft lamppost at a speed of 5 ft/s. Find the rate at which his shadow is increasing in length.

anonymous · Answer

I am fairly sure of this solution. After finishing, I looked online and found this as well: http://www.math-prof.com/Calculus_1/Calc_Ch_21.asp About halfway down the page there is an example exactly like this.