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Question

In the given figure, O is the centre of the circle. If A is any point on minor arc BC, then BACOBC= _________.
725955_4e7aa35ce64e4ed88e484daa3754a527.png

A
45o
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B
135o
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C
150o
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D
90o
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Solution

The correct option is C 90o
BAC and BOC are supplementary.
BOC+BAC=180oeqn(1)
and OBC=OCB(OB=OC)
OBC=90oBOC
Putting the above value of BOC in equation (1), we get
90oOBC+BAC=180o
BACOBC=90o

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