Ex: Related Rates Problem -- Rate of Change of a Shadow from a Light Pole

[@Mathispower4u]

I will make another video that shows how to find both how fast the tip is moving and how fast the length of the shadow is changing. Thanks for the suggestion.

[@virtualdude64]

This video changed my life.

[@william3371]

4:56 Achievement get! _"Bird Watching"_ Desc.: Get a *_red herring_* in the problem, i.e., info not needed that can actually mess up your answer if you try to use it

[@YePi-ps5wz]

Excellent video

[@temporarylaundrybasketcase3592]

thats one tall lady

[@Mathispower4u]

: - )

[@hduongFGC]

so in the end,... what's that information x = 45 useful for? :)

[@fmiller36]

I know right? This was such a waste of a problem. I spent an hour trying solve this using the Pythagorean theorem formula because plugging 45 in for x kept getting rid of my second variable needed to solve this via similar triangles.

[@astrosurfer]

it didn't come into play because the example was a linear function

[@xivalzzz]

thanks this is really helpful

[@JeanDAVID]

How fast is the length of the shadow changing ? (Length = y-x)

[@glennrickelton4093]

Good explanation and easy to follow