Část:
Project ID:
1003085801
Source Problem:
Accepted:
1
Clonable:
1
Easy:
0
Množina řešení nerovnice \( \cos x > 0{,}5 \) pro \( x\in\mathbb{R} \) je:
\( \bigcup\limits_{k\in\mathbb{Z}}\left(-\frac{\pi}3+2k\pi;\ \frac{\pi}3+2k\pi\right) \)
\( \bigcup\limits_{k\in\mathbb{Z}}\left(-\frac{\pi}3+k\pi;\ \frac{\pi}3+k\pi\right) \)
\( \bigcup\limits_{k\in\mathbb{Z}}\left(-\frac{\pi}3+2k\pi;\ k\pi\right) \)
\( \bigcup\limits_{k\in\mathbb{Z}}\left(-\frac{\pi}3+2k\pi;\ 2k\pi\right) \)