Выразите в радианах: 1) 1°; 2) 45°; 3) 225°; 4) 10°; 5) 60°; 6) 240°; 7) 15°; 8) 70°; 9) 320°; 10) 30°; 11) 90°; 12) 330°.

Используем соотношение: \(180^\circ=\pi\) рад, поэтому градусы умножаем на \(\frac{\pi}{180}\).

1. \(1^\circ=\frac{\pi}{180}\) рад.
2. \(45^\circ=\frac{45\pi}{180}=\frac{\pi}{4}\) рад.
3. \(225^\circ=\frac{225\pi}{180}=\frac{5\pi}{4}\) рад.
4. \(10^\circ=\frac{10\pi}{180}=\frac{\pi}{18}\) рад.
5. \(60^\circ=\frac{60\pi}{180}=\frac{\pi}{3}\) рад.
6. \(240^\circ=\frac{240\pi}{180}=\frac{4\pi}{3}\) рад.
7. \(15^\circ=\frac{15\pi}{180}=\frac{\pi}{12}\) рад.
8. \(70^\circ=\frac{70\pi}{180}=\frac{7\pi}{18}\) рад.
9. \(320^\circ=\frac{320\pi}{180}=\frac{16\pi}{9}\) рад.
10. \(30^\circ=\frac{30\pi}{180}=\frac{\pi}{6}\) рад.
11. \(90^\circ=\frac{90\pi}{180}=\frac{\pi}{2}\) рад.
12. \(330^\circ=\frac{330\pi}{180}=\frac{11\pi}{6}\) рад.