Question

plz answer fast this question
step by step otherwise deleted

NOTE - its not given that BC is the diameter
(this the third time I'm asking this question so, plz answer properly)​

Answer 1

Answer:

Angle BCA + Angle ABC + Angle BAC = 180. (Angle Sum property)

31 + 69 + x = 180

x = 80 degrees

Thus,

Angle BAC = 80

Now,

Angle BAC = Angle BDC

Thus, Angle BDC = 80 degrees.

Hope it helps.