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.
solve cos x = (sqrt 3) / 2 for -pi <= x <= pi
solve cos x = (sqrt 3) / 2 for -pi <= x <= pi
Natural Language
Math Input
Extended Keyboard