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.
(tg^2(x)+5tg(x)-6)(sqrt(-cos(x))) = 0, 0<=x<=pi
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random