Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
pi times (integrate (sec(0.5x))^2 dx from x=0 to pi/3)
pi times (integrate (sec(0.5x))^2 dx from x=0 to pi/3)
Natural Language
Math Input
