1. Для \(10^\circ\): \(\frac{10 \times \pi}{180} = \frac{\pi}{18}\) радиан.
2. Для \(216^\circ\): \(\frac{216 \times \pi}{180} = \frac{6\pi}{5}\) радиан.
3. Для \(-18^\circ\): \(\frac{-18 \times \pi}{180} = -\frac{\pi}{10}\) радиан.
Ответ: \(\frac{\pi}{18}\), \(\frac{6\pi}{5}\), \(-\frac{\pi}{10}\)