nathi123 » Чт ноя 30, 2017 9:30 pm
Очень просто так ,как [tex]sin\frac{\varphi}{2}=cos(\frac{\pi}{2}-\frac{\varphi}{2})[/tex] и [tex]cos\frac{\varphi}{2}=sin(\frac{\pi}{2}-\frac{\varphi}{2}) \Rightarrow[/tex]
[tex]z=3(sin\frac{\varphi}{2}+icos\frac{\varphi}{2})=3(cos(\frac{\pi}{2}-\frac{\varphi}{2}) + isin(\frac{\pi}{2}-\frac{\varphi}{2}))[/tex].
Очень просто так ,как [tex]sin\frac{\varphi}{2}=cos(\frac{\pi}{2}-\frac{\varphi}{2})[/tex] и [tex]cos\frac{\varphi}{2}=sin(\frac{\pi}{2}-\frac{\varphi}{2}) \Rightarrow[/tex]
[tex]z=3(sin\frac{\varphi}{2}+icos\frac{\varphi}{2})=3(cos(\frac{\pi}{2}-\frac{\varphi}{2}) + isin(\frac{\pi}{2}-\frac{\varphi}{2}))[/tex].