Question

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​

Answer 1

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.