Решебник по алгебре и начала математического анализа 11 класс Колягин Задание 121

\[1)\ tg\frac{15\pi}{14},\ \ \ tg\frac{\pi}{3},\ \ \ tg\left( - \frac{6\pi}{7} \right):\]

\[\text{tg}\frac{15\pi}{14} = tg\left( \frac{15\pi}{14} - \pi \right) = tg\frac{\pi}{14};\]

\[\text{tg}\left( - \frac{6\pi}{7} \right) = tg\left( \pi - \frac{6\pi}{7} \right) = tg\frac{\pi}{7};\]

\[\text{tg}\frac{\pi}{14} < tg\frac{\pi}{7} < tg\frac{\pi}{3}.\]

\[2)\ tg\ 3,\ \ \ tg\ 1,8,\ \ \ tg\ 2,\ \ \ tg\ 4,5:\]

\[tg\ 1,8 < tg\ 2 < tg\ 3 < 0;\]

\[tg\ 4,5 > 0;\]

\[tg\ 4,5 < tg\ 3 < tg\ 2 < tg\ 1,8.\]