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CBSE XI
>>
Math
>>
Straight Lines
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Q)
If
p
and
q
are the lengths of perpendiculars from the origin to the lines
x
cos
θ
−
y
sin
θ
=
k
cos
2
θ
and
x
sec
θ
+
y
c
o
s
e
c
θ
−
k
, respectively, prove that
p
2
+
4
q
2
=
k
2
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