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Question

In the given figure, O is the centre of the circle and AOB=70o. Calculate the value of OAC.
1715394_5537b5ca8a884809adfb17a29d8a99a6.png

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Solution

From the figure we know that the radius is
OA=OC

We know that the base angles of an isosceles triangle are equal
OAC=OCA

It is given that OCA=35o

So we get

OAC=35o

Therefore, OAC=35o

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