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Project ID:
2010010701
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1
Množina riešení rovnice \( \cos x =-0{,}5 \) for \( x\in\langle 0;2\pi \rangle\) je:
\( \left\{ \frac{2\pi}3;\frac{4\pi}3\right\} \)
\( \left\{ \frac{2\pi}3;\frac{5\pi}3\right\} \)
\( \left\{ \frac{4\pi}3;\frac{5\pi}3\right\} \)
\( \left\{ \frac{4\pi}3;\frac{7\pi}3\right\} \)