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AP EAMCET Engineering 2016 Code C Paper
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© examsnet.com
Question : 25
Total: 160
If the lines
k
x
+
2
y
−
4
=
0
and
5
x
−
2
y
−
4
=
0
are conjugate with respect to the circle
x
2
+
y
2
−
2
x
−
2
y
+
1
=
0
, then
k
=
0
1
2
3
Validate
Solution:
conjugate lines
r
2
(
l
1
l
2
+
m
1
m
2
)
=
(
l
1
g
+
m
1
f
−
n
1
)
(
l
2
g
+
m
2
f
−
n
2
)
K
=
1
© examsnet.com
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