Consider the following article:
https://en.wikipedia.org/wiki/Fourier_series
At definition, they say that an = An*sin() and bn = An*cos()
So with these notations you can go from a sum having sin and cos to a sum having only sin but with initial phases.
Why can I write an = An*sin() and bn = An*cos() ?
It seems out of the blue.
https://en.wikipedia.org/wiki/Fourier_series
At definition, they say that an = An*sin() and bn = An*cos()
So with these notations you can go from a sum having sin and cos to a sum having only sin but with initial phases.
Why can I write an = An*sin() and bn = An*cos() ?
It seems out of the blue.