Задание
Решите уравнение: \(\huge {cosx= {{1} \over{2}}}.\)
- \(\huge {x= \pm {{ \pi} \over {3}} +2 \pi k, k \in Z}\)
- \(\huge {x= \pm {{ \pi} \over {6}} +2 \pi k, k \in Z}\)
- \(\huge {x= \pm {{ \pi} \over {4}} + \pi k, k \in Z}\)
- \(\huge {x= \pm {{ \pi} \over {5}} + \pi k, k \in Z}\)