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

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

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ABCD is a cyclic quadrilateral whose diagonals intersect at a point E. If $∠$ DBC = 70 $^{\circ}$ , $∠$ BAC = 30 $^{\circ}$ , find $∠$ BCD. Further, if AB= BC, find $∠$ ECD.

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

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