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(7a)+cos(3a)-cos(5a)-cos(a))/(sin(7a)-sin(3a)-sin(5a)+sin(a))
(cos(7a)+cos(3a)-cos(5a)-cos(a))/(sin(7a)-sin(3a)-sin(5a)+sin(a))
Natural Language
Math Input
Extended Keyboard
