- #1
luckyduck
- 7
- 0
Homework Statement
-[itex]\frac{1}{2}[/itex][cos([itex]\frac{\pi+\pi n}{\pi+\pi n}[/itex]) + cos([itex]\frac{\pi-\pi n}{\pi-\pi n}[/itex])]
Homework Equations
cos(u)cos(v) = [itex]\frac{1}{2}[/itex] cos(u+v)+cos(u-v)
The Attempt at a Solution
I am attempting to use the above trig function to simplify the first function, but I can't seem to do it properly. Is there another function for when the contents of the cos are equal to its denominator?
Thanks in advance for all your help!