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Byju's Answer
Standard XII
Mathematics
Auxiliary Circle of Ellipse
The number of...
Question
The number of lattice points (lattice points are points with both coordinate integers) on the circle with centre (199, 0) and radius 199 is
___
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Solution
Equation of circle is
(
x
−
199
)
2
+
y
2
=
199
2
x
=
199
+
199
c
o
s
θ
,
y
=
199
s
i
n
θ
s
i
n
θ
=
1
⇒
(
199
,
199
)
s
i
n
θ
=
0
⇒
(
398
,
0
)
,
(
0
,
0
)
s
i
n
θ
=
−
1
⇒
(
199
,
−
199
)
are the only points.
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