Riešenie nerovnice s tangens
Rieš nerovnicu \( 0 \leq \operatorname{tg} x \leq 1 \vee \mathbb{R} \).
\( K=\bigcup_{k \in Z}\left(0 \pi+k \pi ; \frac{\pi}{3}+k \pi\right) \)
\( K=\bigcup_{k \in Z}\left(0 \pi+k \pi ; \frac{\pi}{2}+k \pi\right) \)
\( K=\bigcup_{k \in Z}\left(0 \pi+k \pi ; \frac{\pi}{4}+k \pi\right) \)
\( K=\bigcup_{k \in Z}\left(\frac{\pi}{6}+k \pi ; \frac{\pi}{4}+k \pi\right) \)