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In the adjacent figure ( not to scale), ...

In the adjacent figure ( not to scale), O is the centre of the circle and `/_OBA =30^(@)`. Find `/_ ACB`.
The following sentences ae the steps involved in solving the above problem. Arrange them in sequential order from the first to the last.

(A) `/_OAB =30^(@), /_ OBA =30^(@)`
`implies /_ AOB =180^(@) -30^(@)-30^(@) =120^(@)`
(B) We known that `/_ ACD =("Reflex "/_AOB)/(2)=(240^(@))/(2)=120^(@)`
(C ) Reflex `/_ AOB =240^(@)`
(D ) `OA =OB` (radii) `implies /_ OBA= /_ OAB =30^(@)`.

A

ABCD

B

DCAB

C

DACB

D

DCBA

Text Solution

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The correct Answer is:
C
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