Integrating sec^2(x): How to Refresh Your Memory

[jaredmt]

Homework Statement

how do i integrate sec^2(x)
i completely forgot how to do this one. i know i could rewrite it as:
tan^2(x) + 1 and integrate that, but i forgot how to integrate that 1 too

Homework Equations

The Attempt at a Solution

 

[quasar987]

tan^2(x) + 1 is "obviously" the derivative of tan(x).

 

[rock.freak667]

All you need to remember is that

\frac{d}{dx}(tanx)= sec^2x

and you should be well off now.