Question

in the figure below , o is the centre of the circle . if ∠BOC=140°, then find X


explain properly
plzzz​

Answer 1

Answer:

Step-by-step explanation:

∠AOC=2x=180°-140°=40°

⇒X=20°

Theorem Used:

All angles inscribed in a circle and subtended by the same chord are equal. The inscribed angle is equal to one half of the central angle subtended by the chord. If the chord is a diameter of the circle then the angle is 90 degrees, as in Thales' theorem.