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Byju's Answer
Standard XII
Mathematics
Negative of a Vector
For any three...
Question
For any three vectors
→
a
,
→
b
,
→
c
,
(
→
a
−
→
b
)
.
(
→
b
−
→
c
)
×
(
→
c
−
→
a
)
=
A
0
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B
1
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C
−
1
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D
2
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Solution
The correct option is
B
0
(
→
a
−
→
b
)
.
(
→
b
−
→
c
)
×
(
→
c
−
→
a
)
=
∣
∣ ∣
∣
1
−
1
0
0
1
−
1
−
1
0
1
∣
∣ ∣
∣
[
→
a
→
b
→
c
]
=
[
1
(
1
−
0
)
+
1
(
0
−
1
)
+
0
]
[
→
a
→
b
→
c
]
=
(
1
−
1
)
[
→
a
→
b
→
c
]
=
0
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0
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