(i) 280° = 3 right angles + 10°
Hence, the position of the revolving ray will be the fourth quadrant.
(ii) 390° = 4 right angles + 30°
Hence, the position of the revolving ray will be in the first quadrant.
(iii) – 400° = – 4 right angles – 40°
Hence, the position of the revolving ray will be in the fourth quadrant.
(iv) – 1120° = -3 x 4 right angles – 40°
Therefore, the position of the revolving ray will be in the fourth quadrant.