7) In the figure 'O' is the centre of the circle. What is the value of 'x'? *
100°
с
OA) 130 degrees
O B) 50 degrees
O C) 75 degrees
D) 100 degrees
8
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Step-by-step explanation:
In given figure ,O is the center of circle .∠AOB=100
0
Then external ∠AOB=360
0
−100
0
=260
0
We know that the angle subtended by an arc at the center of a circle is twice
the angle subtended by the same arc at any other point on the remaining part of the circle.
Arc ∠ADB=
2
1
Ex∠AOB=
2
1
×260=130
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Answer:
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