ГДЗ по алгебре и начала математического анализа 11 класс Колягин Задание 80

\[( - \pi;\ 2\pi).\]

\[1)\ ctg\ x = 1\]

\[x = \frac{\pi}{4} + \pi n.\]

\[Ответ:\ - \frac{3\pi}{4};\ \frac{\pi}{4};\ \frac{5\pi}{4}.\]

\[2)\ tg\ x = \sqrt{3}\]

\[x = \frac{\pi}{3} + \pi n.\]

\[Ответ:\ - \frac{2\pi}{3};\ \frac{\pi}{3};\ \frac{4\pi}{3}.\]

\[3)\ ctg\ x = - \sqrt{3}\]

\[x = - \frac{\pi}{6} + \pi n.\]

\[Ответ:\ - \frac{\pi}{6};\ \frac{5\pi}{6};\ \frac{11\pi}{6}.\]

\[4)\ tg\ x = - 1\]

\[x = - \frac{\pi}{4} + \pi n.\]

\[Ответ:\ - \frac{\pi}{4};\ \frac{3\pi}{4};\ \frac{7\pi}{4}.\]