Question

fast......fast. Difficult question. Find the mistake ​

Answer 1

Answer:

∠BDC= 60°

∠BEC=120°

Step-by-step explanation:

as given ΔABC is equilateral ∠BAC= 60°

as we know angle made by same arc are equal.

so ∠BAC = ∠BDC= 60°

now if we see another portion of figure there is quadrilateral EBDC which is a cyclic quadrilateral because its all vertices are on circle.

we know that sum of opposite vertices of cyclic quadrilateral is 180°

so ∠BDC+∠BEC=180°

⇒60°+∠BEC=180°

⇒∠BEC=120°

Answer 2

Answer:

we know that some of the opposite direction of circular in 180 degree

60°+BEC=180°

BEC=120°