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.
integrate( integrate ( delta(cos(theta)-A)*delta(phi-B)*cos(theta)*sin(theta) dtheta ) from 0 to Pi/2 ) dphi from 0 to 2*Pi
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random