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Byju's Answer
Standard VIII
Mathematics
Angle Subtended by Equal Chords at the Center are Equal
In the figure...
Question
In the figure,
O
is the center of circle and
A
B
=
A
C
. Find
∠
B
O
C
.
A
54
o
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B
56
o
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C
47
o
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D
27
o
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Solution
The correct option is
A
54
o
We know,
A
B
=
A
C
So,
∠
A
O
B
=
∠
A
O
C
(Equal chords AB and AC make equal angles at center)
∠
A
O
C
=
153
o
Now,
∠
A
O
B
+
∠
A
O
C
+
∠
B
O
C
=
360
o
153
o
+
153
o
+
∠
B
O
C
=
360
o
∠
B
O
C
=
360
o
−
306
o
∠
B
O
C
=
54
o
So, option
(
a
)
correct.
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0
Similar questions
Q.
The given figure, O is the center of the circle and AB = AC . If
∠
ABC =
60
0
, find
∠
BCA.
Q.
In the given figure,
O
is the center of a circle,
A
B
is a diameter and
A
C
is a chord. Prove that
A
B
>
A
C
.
Q.
In the figure,
A
B
is the diameter of circle, centered at
O
. If
∠
C
O
A
=
60
o
,
A
B
=
2
r
,
A
C
=
d
and
C
D
=
l
, then
Q.
In the given figure ,
O
is the center if the circle with
A
C
=
24
c
m
,
A
B
=
7
c
m
and
∠
B
O
D
=
90
∘
. Find the area of the shaded region.
Q.
In the figure,
O
is the center of the circle,
A
B
and
A
C
are tangents. Radius of the circle is
r
and
l
(
A
B
)
=
r
, Prove that
A
B
O
C
is a square.
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