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.
2^(1/2)cos(x+(pi/6))>=-1
2^(1/2)cos(x+(pi/6))>=-1
Natural Language
Math Input
Extended Keyboard