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.
((13.2 Solar diameters) / (4 hours)) / atan((90 - 30)°)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random