- #1
physicsnoob93
- 169
- 0
Alright, not really homework or coursework.
Sum(from k = 0 to infinity) (cos thetha)^2k = 5
So i subbed in the first value, 0 and took the one out.
I have to find the value of cos(2thetha)and then there was a pattern, but i didn't really know what to do.
Thanks
P.S. Not really familiar with Latex yet.
Sum(from k = 0 to infinity) (cos thetha)^2k = 5
So i subbed in the first value, 0 and took the one out.
I have to find the value of cos(2thetha)and then there was a pattern, but i didn't really know what to do.
Thanks
P.S. Not really familiar with Latex yet.