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CBSE XI
>>
Math
>>
Conic Sections
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Q)
The equation of the circle having centre at
(
3
,
−
4
)
and touching the line
5
x
+
12
y
−
12
=
0
is __________
[Hint : To determine radius find the perpendicular distance from the centre of the circle to the line.]
(
x
−
3
)
2
+
(
y
+
4
)
2
=
45
2
(
x
−
3
)
2
+
(
y
+
4
)
2
=
√
45
13
(
x
−
3
)
2
+
(
y
+
4
)
2
=
(
45
13
)
2
(
x
−
3
)
2
+
(
y
+
4
)
2
=
√
45
13
Share
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