# Calculus: Integration of (Tan x)^2

**URL:** <https://forum.kirupa.com/t/calculus-integration-of-tan-x-2/181305>\
**Category:** random\
**Created:** [March 8, 2006, 6:03am UTC](https://forum.kirupa.com/t/calculus-integration-of-tan-x-2/181305 "2006-03-08T06:03:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kdd](https://avatars.discourse-cdn.com/v4/letter/k/ecb155/32.png) [@kdd](https://forum.kirupa.com/u/kdd)\
**Post date:** [March 8, 2006, 6:03am UTC](https://forum.kirupa.com/t/calculus-integration-of-tan-x-2/181305/1 "2006-03-08T06:03:33Z")

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So, now I need help…

I’ve been trying to figure out the integral of (Tan x)^2, but I just can’t…  
The answer, from the back of the book, is Tan x - x + C.  
Can someone please show me the steps? Thanks.