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Mathematics
Mathematics
Problem
3. Find the distance between
P
(
x
1
,
y
1
)
\mathrm{P}\left(x_{1}, y_{1}\right)
P
(
x
1
,
y
1
)
and
Q
(
x
2
,
y
2
)
\mathrm{Q}\left(x_{2}, y_{2}\right)
Q
(
x
2
,
y
2
)
when : (i) PQ is parallel to the
y
y
y
-axis, (ii) PQ is parallel to the
x
x
x
-axis.
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