rexexdesign
New member
- Joined
- Feb 4, 2008
- Messages
- 6
Hello everyone,
I am helpless, because my teacher gave us a problem we don't have the tools to solve with (at least I cannot apply any of my tools)
how do I break this into smaller pieces: cos7x * cos13x = cosx * cos19x
do I have to use the double angle formula a whole bunch of times? Or is there another way to get the multiple angles split?
Thanks already!
I am helpless, because my teacher gave us a problem we don't have the tools to solve with (at least I cannot apply any of my tools)
how do I break this into smaller pieces: cos7x * cos13x = cosx * cos19x
do I have to use the double angle formula a whole bunch of times? Or is there another way to get the multiple angles split?
Thanks already!