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Mathematics
Mathematics
Problem
The points
A
(
k
,
1
)
A(k,1)
A
(
k
,
1
)
and
B
(
3
,
5
)
B(3,5)
B
(
3
,
5
)
are such that the line
A
B
AB
A
B
is perpendicular to the line joining
C
(
2
,
−
1
)
C(2,-1)
C
(
2
,
−
1
)
and
D
(
6
,
2
)
D(6,2)
D
(
6
,
2
)
. The value of
k
k
k
is a)
−
7
3
-\dfrac{7}{3}
−
3
7
b)
6
6
6
c)
0
0
0
d)
−
6
-6
−
6
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