wanted to share a cool video i found about tangent lines, admittedly i dont understand it fully, probably one of the math whizzes here will :)

https://www.youtube.com/watch?v=n95qJo4ZcnU

Please post this as an Off-Topic post, not a math question.

It is not off topic, it is mathematics.

Thanks for sharing guest.

There are many great youtube clips available.

People who are serious about leanrning maths should make good use of them.