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.
integral from -pi/3 to pi/3 arctan (cos(x) * tan(pi/4)/cos(pi/3))
integral from -pi/3 to pi/3 arctan (cos(x) * tan(pi/4)/cos(pi/3))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random