Plz answer first will be marked as brainliest
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Step-by-step explanation:
Angle A = Angle DCB = 30°
( Opposite angles are equal in parallelogram)
In triangle BDC,
Angle DBC + Angle BDC + Angle DCB = 180°
(Angle sum property of a Triangle)
=> Angle BDC + 90° + 30° = 180°
=> Angle BDC + 120° = 180°
=> Angle BDC = 180° - 120°
=> Angle BDC = 60°
Now, Angle BDC = Angle BEC = 60° (Opposite angles in a parallelogram are equal)
Therefore, Angle BEC = 60°
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