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.
UPGRADE TO PRO
APPS
TOUR
solve {9^sin(x)+9^(-sin(x)) = 10/3,-7*Pi*(1/2)<=x,x<=-2*Pi}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random