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Byju's Answer
Standard XII
Mathematics
Distance Formula
What are the ...
Question
What are the polar coordinates of a point with
(
−
3
,
3
)
rectangle coordinates?
A
(
3
,
135
∘
)
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B
(
−
3
,
135
∘
)
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C
(
3
√
2
,
45
∘
)
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D
(
3
√
2
,
135
∘
)
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E
(
−
3
√
2
,
45
∘
)
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Solution
The correct option is
D
(
3
√
2
,
135
∘
)
Given the points
(
−
3
,
3
)
rectangular coordinates to polar coordinates,
(
x
,
y
)
⟶
(
r
,
θ
)
r
=
√
x
2
+
x
2
=
√
9
+
9
=
3
√
2
tan
θ
=
y
x
⟹
tan
θ
=
3
−
3
⟹
θ
=
tan
−
1
(
−
1
)
=
3
π
4
o
r
7
π
4
As (-3,3) lies in I Quadrant,
θ
=
3
π
4
(
r
,
θ
)
⟹
(
3
√
2
,
,
3
π
4
)
o
r
,
(
3
√
2
,
135
°
)
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