1.

In the given figure, O is the centre of the circle. If \[\angle ABC={{110}^{o}},\]find\[x.\]

A. \[70{}^\circ \]     
B. \[140{}^\circ \]
C. \[60{}^\circ \]       
D. \[120{}^\circ \]
Answer» C. \[60{}^\circ \]       


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