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Standard XII
Mathematics
Collinear Vectors
6. For non ze...
Question
6. For non zero vectors a,b,c ; magnitude of axb.c = magnitude of a,b,c holds only if ?
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Q.
For non-zero vectors
→
a
,
→
b
,
→
c
,
(
→
a
×
→
b
)
.
→
c
=
∣
∣
→
a
∣
∣
∣
∣
∣
→
b
∣
∣
∣
∣
∣
→
c
∣
∣
holds if and only if
Q.
For non-zero vectors
→
a
,
→
b
,
→
c
;
∣
∣
∣
(
→
a
×
→
b
)
⋅
→
c
∣
∣
∣
=
∣
∣
→
a
∣
∣
∣
∣
∣
→
b
∣
∣
∣
∣
∣
→
c
∣
∣
holds if and only if
Q.
For non-coplanar vectors
A
,
B
and
C
,
|
[
A
B
C
]
|
=
|
A
|
|
B
|
|
C
|
holds if and only if
Q.
For non-zero vectors
→
a
,
→
b
,
→
c
,
|
→
a
×
→
b
×
→
c
|
=
|
→
a
|
|
→
b
|
|
→
c
|
holds if and only if:
Q.
For non -zero vectors
→
a
,
→
b
,
→
c
(
→
a
×
→
b
)
.
→
c
=
∣
∣
→
a
∣
∣
∣
∣
∣
→
b
∣
∣
∣
∣
∣
→
c
∣
∣
holds if
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