Hello! Thank you for helping me with this question! I have no idea how do I sum trigonometric function! [Or are we supposed to use summation by method of difference?]
Evaluate the following:
∑ sin [pi / (r-10)]
Thank you very much!
It looks as though you will just have to muddle through it the hard way and do this
Which is equal to ....You can't really do exact values because for example
Is given by the infinitely nested radical
But if it is helpful mathcad says