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.
cos(pi/3), cos(pi/4), cos(pi/6)
cos(pi/3), cos(pi/4), cos(pi/6)
Natural Language
Math Input
Extended Keyboard
