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Byju's Answer
Standard IX
Mathematics
Angle Subtended by an Arc of a Circle on the Circle and at the Center
In given figu...
Question
In given figure,
∠
A
C
B
=
40
∘
.
Find
∠
A
O
B
.
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Solution
We know in a circle the angle subtended by the chord at the center is twice the angle subtended by it at any point in the circle
Therefore,
∠
A
O
B
=
2
∠
A
C
B
=
80
∘
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Q.
In the given figure, if ∠ACB = 40
∘
, then ∠AOB = ______ and ∠OAB = _____________