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Byju's Answer
Standard XII
Mathematics
Dot Product of Two Vectors
If A⃗O⃗+O⃗B...
Question
If
→
A
O
+
→
O
B
=
→
B
O
+
→
O
C
, then
A
,
B
and
C
are (where
O
is the origin)
A
coplanar
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B
collinear
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C
non-collinear
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D
none of these
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Solution
The correct option is
A
coplanar
−
−
→
A
O
+
−
−
→
O
B
=
B
O
+
−
−
→
O
C
−
−
→
A
B
=
−
−
→
B
C
Therefore,
A
,
B
and
C
are collinear
Option
A
and
B
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0
Similar questions
Q.
If
→
A
O
+
→
O
B
=
→
B
O
+
→
O
C
, then
Q.
Four vertices O, A, B, C of a tetrahedron satisfy
⎡
⎢ ⎢
⎣
→
O
A
×
→
O
B
=
^
i
−
^
j
+
^
k
→
O
B
×
→
O
C
=
^
i
→
O
C
×
→
O
A
=
−
^
i
+
^
j
⎤
⎥ ⎥
⎦
where 'O' is the the origin.
Then
∣
∣
→
C
A
×
→
C
B
∣
∣
has the value equal to
Q.
Let
A
,
B
,
C
be three points with position vectors
^
i
+
^
j
,
^
i
−
^
j
and
l
^
i
+
m
^
j
+
n
^
k
respectively and
O
be the origin, then
→
O
A
,
→
O
B
,
→
O
C
are coplanar if
Q.
Given a parallelogram OACB. The lengths of the vectors
→
O
A
,
→
O
B
&
→
A
B
are
a
,
b
&
c
respectively. The scalar product of the vectors
→
O
C
&
→
O
B
is :
Q.
If
A
B
C
D
is a rhombus whose diagonals cut at the origin
O
, then
→
O
A
+
→
O
B
+
→
O
C
+
→
O
D
equals to
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