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.
360 * cos(x) / (4 * d/dx(4 pi 1 / .000633 * sec x (1.52 - sec(arcsin(sin(x)/1.52) - x)))), x=pi/18
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random