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 30 cos theta + sin 30 sin theta) - (cos30 cos theta - sin30 sin theta)
(cos 30 cos theta + sin 30 sin theta) - (cos30 cos theta - sin30 sin theta)
Natural Language
Math Input
Extended Keyboard
