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mandag den 17. juni 2013

Expansion formula for cos⁡nx  or cos(nx) --- deriving a formula for cos⁡(nx) in terms of cos(⁡x) / cosx



https://docs.google.com/file/d/0B4hjJTbOj_agem4zZTdxVUhaSWM/edit 


Read the file in the link above, x has just been replaced with θ




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