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

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

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

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

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

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