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TS EAMCET 9-Sep-2020 Shift 2 Solved Paper
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© examsnet.com
Question : 52
Total: 160
r
1
,
r
2
>
0
and if
C
1
,
C
2
are centres of the two circles having only two common tangents and
C
1
C
2
=
r
1
+
r
2
, then which of the following is correct
r
1
,
r
2
are the radii of the two circles
The common chord may divide the line joining the centres in the ratio
r
1
:
r
2
r
1
,
r
2
are always the distances of the centres from the common tangent of the two circles
external centre of similitude divides
C
1
C
2
in the ratio
r
1
:
r
2
Validate
Solution:
When two circles, having centre have only two common tangents and
c
1
c
2
=
r
1
+
r
2
, then the common chord divide the line joining the centres in the ratio
r
1
:
r
2
.
© examsnet.com
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