1. Для \(75^\circ\): \(\frac{75 \times \pi}{180} = \frac{5\pi}{12}\) радиан.
2. Для \(210^\circ\): \(\frac{210 \times \pi}{180} = \frac{7\pi}{6}\) радиан.
3. Для \(-36^\circ\): \(\frac{-36 \times \pi}{180} = -\frac{\pi}{5}\) радиан.
Ответ: \(\frac{5\pi}{12}\), \(\frac{7\pi}{6}\), \(-\frac{\pi}{5}\)