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In the above figure (not to scale) , O is the centre of the circle and `overline(CD)||overline(AB)`.If `angleDAO=20^(@)` , then `angleAOB=` _______.

A

`110^(@)`

B

`130^(@)`

C

`100^(@)`

D

`120^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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