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EAMCET Engineering 2005 Solved Paper
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© examsnet.com
Question : 138
Total: 160
The cartesian form of the polar equation
θ
=
tan
−
1
2
is
x
=
2
y
y
=
2
x
x
=
4
y
y
=
4
x
Validate
Solution:
Given that
θ
=
tan
−
1
2
⇒
tan
θ
=
2
We know,
x
=
r
cos
θ
,
y
=
r
s
i
n
θ
⇒
tan
θ
=
y
x
∴
y
=
2
x
© examsnet.com
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