Перевести в радианную меру 10; 260; 405; -64; -135

10° = 10° · π/180° = π/18;
260° = 260° · π/180° = 13π/9;
405° = 405° · π/180°  = 9π/4;
-64° = - 64° · π/180°  = - 16π/45;
-135° = - 135° · π/180°  = -3π/4;