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.
sin(sqrt(2)/2)/(sec(pi/4)*arctan((3*pi)/4)*cos(pi!))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random