4. TBQ - Find the value of angles

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In a cyclic quadrilateral \(ABCD\), the diagonals intersect at point \(E\). If \(∠DBC=65^ ∘\) and \( ∠BAC=35^ ∘\) , calculate the measure of \(∠BCD\). Further, if \(AB=BC\), calculate \(∠ECD\).
 
\(∠BCD=\)
 
\(∠ECD=\)
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