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Byju's Answer
Standard IX
Mathematics
Distance Formula
Q10 #160;AB...
Question
Q
10
A
B
=
3
i
^
+
j
^
+
k
^
A
C
=
i
^
-
j
^
+
3
k
^
i
f
p
o
i
n
t
s
P
o
n
t
h
e
l
i
n
e
s
e
g
m
e
n
t
B
C
i
s
e
q
u
i
d
i
s
tan
t
f
r
o
m
A
B
a
n
d
A
c
t
h
a
A
P
i
s
Open in App
Solution
Dear student
A
point
equidistant
from
AB
→
and
AC
→
is
the
bisector
of
∠
BAC
.
A
vector
along
the
internal
∠
bisector
of
∠
BAC
=
AB
→
AB
→
+
AC
→
AC
→
=
3
i
+
j
-
k
3
2
+
1
2
+
-
1
2
+
i
-
j
+
3
k
1
2
+
-
1
2
+
3
2
=
3
i
+
j
-
k
11
+
i
-
j
+
3
k
11
=
1
11
4
i
+
2
k
So
,
AP
→
=
t
2
i
+
k
and
BP
→
=
AP
→
-
AB
→
=
t
2
i
+
k
-
3
i
+
j
-
k
=
2
t
-
3
i
-
j
+
t
+
1
k
Also
BC
→
=
AC
→
-
AB
→
=
i
-
j
+
3
k
-
3
i
+
j
-
k
=
-
2
i
-
2
j
+
4
k
But
BP
→
=
s
BC
→
So
,
2
t
-
3
i
-
j
+
t
+
1
k
=
s
-
2
i
-
2
j
+
4
k
So
,
2
t
-
3
=
-
2
s
,
-
1
=
-
2
s
,
t
+
1
=
4
s
So
,
s
=
1
2
and
t
=
1
So
,
AP
→
=
2
i
+
k
Regards
Suggest Corrections
0
Similar questions
Q.
A
B
=
3
i
+
j
−
k
and
A
C
=
i
−
j
+
3
k
. If the point
P
on the line segment
B
C
is equidistant from
A
B
and
A
C
,
then
A
P
is
Q.
Let
−
−
→
A
B
=
3
i
+
j
−
k
and
−
−
→
A
C
=
i
−
j
+
3
k
. If the point
P
on the line segment
B
C
is equidistant from
A
B
and
A
C
, then
→
p
is
Q.
Let
−
−
→
A
B
=
3
^
i
+
^
j
−
^
k
and
−
−
→
A
C
=
^
i
−
^
j
+
3
^
k
and a point
P
on the line segment
B
C
be equidistant from
A
B
and
A
C
, the
−
−
→
A
P
is
Q.
A
B
=
3
^
i
+
^
j
−
^
k
and
A
C
=
^
i
−
^
j
+
3
^
k
.
If the point
P
on the line segment
B
C
is equdistant from
A
B
and
A
C
,
then
A
P
is
Q.
Using ruler and compasses only, construct an isosceles
Δ
A
B
C
in which
B
C
=
5
cm,
A
B
=
A
C
and
∠
B
A
C
=
90
Locate the point
P
such that :
(i)
P
is equidistant from
B
C
and
A
C
.
(ii)
P
is equidistant from
B
and
C
.
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