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Byju's Answer
Standard XII
Mathematics
Modulus of a Complex Number
|1-izz-i|=1, ...
Question
|
1
−
i
z
z
−
i
|
=1, Find the locus of z.
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Solution
∣
∣
∣
i
−
i
z
z
−
i
∣
∣
∣
=
1
∣
∣
∣
1
−
i
(
x
+
i
y
)
x
+
i
y
−
i
∣
∣
∣
=
1
|
1
+
y
−
i
x
|
=
|
x
+
i
(
y
−
1
)
|
(
1
+
y
)
2
+
x
2
=
x
2
+
(
y
−
1
)
2
1
+
2
y
=
1
−
2
y
4
y
=
0
y
=
0
z
=
0
⇒
I
n
(
z
)
=
0
H
e
n
c
e
,
z
i
s
p
u
r
e
l
y
r
e
a
l
.
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Q.
The locus of
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∣
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Standard XII Mathematics
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