Question

In the figure, O is the centre of the circle. Find the length of CD, if AB = 5 cm.

Answer 1

In given figure O is the center of circle .And lenth AB=5 cm and $\angle AOB=\angle COD={55}^0$

In $\Delta AOB$ and $\Delta COD$

$\angle AOB=\angle COD={55}^0$ (Given )

$OA=OD$ (Radius)

$OB=OC$ (Radius)

$\therefore \Delta AOB\cong \Delta COD$

$\therefore AB=CD=5cm$ Given AB=5 cm

So CD=5 cm