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Byju's Answer
Standard XII
Mathematics
Direct Common Tangent
In the given ...
Question
In the given figure, PA and PB are tangents to a circle with centre O. If
∠
A
P
B
=
(
2
x
+
3
)
0
a
n
d
∠
A
O
B
=
(
3
x
+
7
)
0
,
then find the value of x.
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Solution
∠
A
P
B
=
(
2
x
+
3
)
∠
A
O
B
=
(
3
x
+
7
)
2
x
+
3
+
3
x
+
7
=
180
∘
5
x
+
10
=
180
∘
⇒
5
x
=
170
x
=
34
∘
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