Integral of tan^2x

This calculus tutorial will help you learn how to integrate tan^2(x) with a trigonometric identity. Remember we can divide sin^2(x)+cos^2(x)=1 by cos^2(x) and get the identity that tan^2(x)=sec^2(x)-1.

Check out my 100 integrals for more integration practice for your Calculus 1 or calculus 2 class. 100 integrals (world record?)
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