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Byju's Answer
Other
Quantitative Aptitude
Circles
BD is the dia...
Question
In the adjoining figure, BD is the diameter of the circle and
∠
B
C
A
=
41
∘
.
F
i
n
d
∠
A
B
D
.
A
41
∘
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B
49
∘
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C
22.5
∘
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D
20.5
∘
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Solution
The correct option is
B
49
∘
∠
A
D
B
=
∠
A
C
B
=
41
∘
(angle of the same segment)
∴
∠
A
B
D
=
180
−
(
∠
A
D
B
+
90
)
=
49
∘
(
∠
D
A
B
=
90
∘
)
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Q.
In the given figure, BOC is a diameter of a circle with centre O. If
∠BCA = 30°, then ∠CDA = ?
(a) 30°
(b) 45°
(c) 60°
(d) 50°