Question

find x please answer this with step by step explaination​

Answer 1

Answer:

ACBO is a quadrilateral

therefore, sum of all angles is 360°

ang. A = 30 °

ang. B = 40°

ang. C = 1/2 x ( As angle subtended by the same arc is half of the central angle )

ang. O = 360 - x °

Adding all of them we get :

30 + 40 + 1/2 x + 360 - x = 360°

430 - 1/2 x = 360°

-1/2 x = 360 - 430

-1/2 x = -70°

x = 140°

Hope it helps you