Tan is the shortened version of the term Tangent, which is a trigonometrical equation. That is how it would be graphed. It's a relatively simple concept, but one you don't learn prior to Trig.
I wish I could take your SECOND derivative, so I could investigate your concavities ;)
OR I wish I could be your integral, so I could be the area under your curves.
+8
#64

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