Chords AB and CD of a circle substance equal angle at the centre. find CD if AB = 4cm (a) 8 cm (b) 4cm (c) 2cm (d) Incomplete information
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Step-by-step explanation:
In ΔAOB and ΔCOD,
AB=CD (Given)
AO=CO (radius)
OB=OD (radius)
By S.S.S congruency, ΔAOB≅ΔCOD
⇒∠AOB=∠COD.
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