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Byju's Answer
Standard XII
Mathematics
Angle between Two Lines
The absolute ...
Question
The absolute value of difference of the slopes of the lines
x
2
(
sec
2
θ
−
sin
2
θ
)
−
2
x
y
tan
θ
+
y
2
sin
2
θ
=
0
is
A
-2
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B
1/2
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C
2
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D
1
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Solution
The correct option is
B
2
Given pair of lines
x
2
(
sec
2
θ
−
sin
2
θ
)
−
2
x
y
tan
θ
+
y
2
sin
2
θ
=
0
y
2
sin
2
θ
−
2
x
y
tan
θ
+
x
2
(
sec
2
θ
−
sin
2
θ
)
=
0
y
=
2
x
tan
θ
±
√
4
x
2
tan
2
θ
−
4
sin
2
θ
x
2
(
sec
2
θ
−
sin
2
θ
)
2
sin
2
θ
y
=
2
x
tan
θ
±
√
4
x
2
tan
2
θ
−
4
tan
2
θ
x
2
+
4
x
2
sin
4
θ
2
sin
2
θ
y
=
2
x
tan
θ
±
√
4
x
2
sin
4
θ
2
sin
2
θ
y
=
2
x
tan
θ
±
2
x
sin
2
θ
2
sin
2
θ
y
=
(
tan
θ
±
sin
2
θ
)
sin
2
θ
x
On comparing above equation with
y
=
m
x
+
c
we get
m
=
(
tan
θ
±
sin
2
θ
)
sin
2
θ
Here
m
1
=
(
tan
θ
+
sin
2
θ
)
sin
2
θ
and
m
2
=
(
tan
θ
−
sin
2
θ
)
sin
2
θ
m
1
−
m
2
=
(
tan
θ
+
sin
2
θ
)
sin
2
θ
−
(
tan
θ
−
sin
2
θ
)
sin
2
θ
⇒
m
1
−
m
2
=
tan
θ
+
sin
2
θ
−
tan
θ
+
sin
2
θ
sin
2
θ
⇒
m
1
−
m
2
=
2
sin
2
θ
sin
2
θ
⇒
m
1
−
m
2
=
2
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0
Similar questions
Q.
The absolute value of difference of the slope of the lines
x
2
(
sec
2
θ
−
sin
2
θ
)
−
2
x
y
tan
θ
+
y
2
sin
2
θ
=
0
is
Q.
The square of the differences of the slopes of the lines represented by the equation
x
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θ
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+
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sin
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Q.
The difference of the slopes of the lines represented by
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)
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