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.
sin(x)/3 - sum_(n=0)^5 ((sin((2n+3)x))/((2n+1)(2n+3)(2n+5))) - pi/8 sin^2(x)
sin(x)/3 - sum_(n=0)^5 ((sin((2n+3)x))/((2n+1)(2n+3)(2n+5))) - pi/8 sin^2(x)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random