ANGLES whose sum is 90° are called complementary angles and two angles whose sum is 180° are called SUPPLEMENTARY anglesLet the ANGLE be xAccording to the question,⇒ (180° – x) = 5/2 (90° – x)⇒ 360° – 2X = 450° – 5x⇒ 3x = 90°⇒ x = 30°∴ The angle is 30°