notes/notes/mat/Funkce/Samostudium 15.md

Samostudium 15

$\sin\frac56\pi=\sin\frac16\pi=\frac12$ $\sin\frac{15}3\pi=\sin\pi=0$ \sin(-\frac74\pi)=\sin\frac14\pi

$\cos\frac34\pi=-\sin\frac14\pi=\frac{\sqrt2}2$ $\cos\frac76\pi=-\sin\frac16\pi=\frac12$ \cos(-\frac43\pi)=\cos\frac23\pi=-\sin\frac13\pi=\frac{\sqrt3}2

$\sin210\degree=-\sin30\degree=-\frac12$ $\sin330\degree=-\sin30\degree=-\frac12$ \sin720\degree=0

$\cos(-180\degree)=-1$ $\cos120\degree=\sin30\degree=\frac12$ \cos240\degree=\sin30\degree=\frac12