Question

in the following figure O is the centre of the circle and BC is the diameter if angle b is equal to 40 degree and Angle b is equal to what​

Answer 1

in triangle BAC angle 60 + angle 50 + angle BAC is equal to 180 because property of triangle so angle BAC is equal to 70 bdc is equal to angle BAC because Made in angle in the same segment and the angle are equal by theorem so angry bird is equal to 70 degree