# Integration of Sin Squared x

In this tutorial we shall derive the integral of sine squared x.

The integration is of the form

This integral cannot be evaluated by the direct formula of integration, so using the trigonometric identity of half angle , we have

Using the integral formula , we have

JAMES DALTON

July 21@ 5:11 pmEvaluating from zero to 2pi gives pi but I thought the answer should be one half. Where I am I going wrong?