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Mathematics
Mathematics
Problem
In
△
A
B
C
\triangle ABC
△
A
B
C
, the points
A
(
1
,
7
)
A(1,7)
A
(
1
,
7
)
and
B
(
10
,
1
)
B(10,1)
B
(
10
,
1
)
are joined. A point
P
P
P
divides
A
B
AB
A
B
internally in the ratio
1
:
2
1:2
1
:
2
. If
C
(
8
,
−
1
)
C(8,-1)
C
(
8
,
−
1
)
, calculate the length
P
C
PC
P
C
.
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