ABCD is a cyclic quadrilateral whose diagonals intersect at a point E.

1.	ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If ∠DBC=70∘ and ∠BAC=30∘, then find ∠BCD. Further, if AB = BC, then find ∠ECD.
Answer» ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If $∠ D B C = 70^{\circ}$ and $∠ B A C = 30^{\circ}$ , then find $∠ B C D$ . Further, if AB = BC, then find $∠ E C D$ .

ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If ∠DBC=70∘ and ∠BAC=30∘, then find ∠BCD. Further, if AB = BC, then find ∠ECD.

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ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If $∠ D B C = 70^{\circ}$ and $∠ B A C = 30^{\circ}$ , then find $∠ B C D$ . Further, if AB = BC, then find $∠ E C D$ .

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ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If ∠DBC=70∘ and ∠BAC=30∘, then find ∠BCD. Further, if AB = BC, then find ∠ECD.

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