\[\boxed{\mathbf{450.}}\]
\[1)\ 3\pi < a < \frac{10\pi}{3}\ \ \ \ \ | - 2\pi\]
\[\pi < a < \frac{4\pi}{3}\]
\[\pi < a < \frac{3\pi}{2}\]
\[в\ III\ четверти\]
\[Ответ:\ \ \sin a < 0;\ \ \cos a < 0;\ \ \]
\[\text{tg}a > 0;\ \ \text{ctg}a > 0.\]
\[2)\ \frac{5\pi}{2} < a < \frac{11\pi}{4}\ \ \ \ \ | - 2\pi\]
\[\frac{\pi}{2} < a < \frac{3\pi}{4}\]
\[\frac{\pi}{2} < a < \pi\]
\[во\ II\ четверти\]
\[Ответ:\ \ \sin a > 0;\ \ \cos a < 0;\ \ \]
\[\text{tg}a < 0;\ \ \text{ctg}a < 0.\]