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Byju's Answer
Standard XII
Mathematics
Shortest Distance between Two Skew Lines
The shortest ...
Question
The shortest distance between the lines
x
+
1
7
=
y
+
1
−
6
=
z
+
1
1
and
x
−
3
1
=
y
−
5
−
2
=
z
−
7
1
is
A
11
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B
12
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C
2
√
29
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D
2
√
30
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Solution
The correct option is
C
2
√
29
The shortest distance between the lines
=
⎛
⎜
⎝
1
+
3
1
+
5
1
+
7
1
−
2
1
7
−
6
1
∣
∣ ∣
∣
√
(
7
×
(
−
2
)
−
1
×
(
−
6
)
)
2
+
(
7
×
1
−
1
×
1
)
2
+
(
(
−
6
)
×
1
−
1
×
(
−
2
)
)
2
=
⎛
⎜
⎝
4
6
8
1
−
2
1
7
−
6
1
∣
∣ ∣
∣
√
(
−
4
)
2
+
(
6
)
2
+
(
−
8
)
2
=
16
+
36
+
64
√
16
+
36
+
64
=
116
√
116
=
√
116
=
2
√
29