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Riešenie trigonometrickej rovnice
Rieš v \( \mathbb{R} \) rovnici:
\( \sin ^{2} x+\operatorname{cotg} x+2=4-\cos ^{2} \)
\( K=\bigcup_{k \in \mathbb{Z}}\left\{\frac{\pi}{3}+k \pi\right\} \)
\( K=\bigcup_{k \in \mathbb{Z}}\left\{\frac{\pi}{2}+k \pi\right\} \)
\( K=\bigcup_{k \in \mathbb{Z}}\left\{\frac{\pi}{6}+k \pi\right\} \)
\( K=\bigcup_{k \in \mathbb{Z}}\left\{\frac{\pi}{4}+k \pi\right\} \)