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CBSE XI
>>
Math
>>
Conic Sections
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Q)
Find the equation of a circle which touches both the axes and the line
3
x
−
4
y
+
8
=
0
and lies in the third quadrant.
[Hint : Let
a
be the radius of the circle ,then
(
−
a
,
−
a
)
will be centre and perpendicular distance from the centre to the given line gives the radius of the circle.]
x
2
+
y
2
+
4
x
+
4
y
+
4
=
0
x
2
+
y
2
−
4
x
−
4
y
+
4
=
0
x
2
+
y
2
−
4
x
−
4
y
−
4
=
0
x
2
+
y
2
+
4
x
+
4
y
−
4
=
0
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