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Byju's Answer
Standard XII
Mathematics
Distance Formula
Show that the...
Question
Show that the vectors
→
a
,
→
b
,
→
c
given by
→
a
=
^
i
+
2
^
j
+
3
^
k
,and
→
c
=
^
i
+
^
j
+
^
k
are non-coplanar.Express vector
→
d
=
2
^
i
−
^
j
−
3
^
k
as a linear combination of the vectors
→
a
,
→
b
and
→
c
Open in App
Solution
[
→
a
→
b
→
c
]
=
∣
∣ ∣
∣
1
2
3
2
1
3
1
1
1
∣
∣ ∣
∣
=
(
1
−
3
)
−
2
(
2
−
3
)
+
3
(
2
−
1
)
1
(
−
2
)
−
2
(
−
1
)
+
3
(
1
)
−
2
+
2
+
3
=
3
≠
0
.
∴
the given vectors are non-coplanar.
Suggest Corrections
0
Similar questions
Q.
If
→
a
=
2
^
i
+
^
j
−
3
^
k
,
→
b
=
^
i
−
2
^
j
+
^
k
,
→
c
=
−
^
i
+
^
j
−
4
^
k
and
→
d
=
^
i
+
^
j
+
^
k
, then
|
(
→
a
×
→
b
)
×
(
→
c
×
→
d
)
|
Q.
If
→
a
=
^
i
+
^
j
+
^
k
,
→
b
=
2
^
i
−
^
j
+
3
^
k
and
→
c
=
^
i
−
2
^
j
+
^
k
, find a unit vector parallel to the vector
2
→
a
−
→
b
+
3
→
c
.
Q.
If
→
a
′
=
^
i
+
^
j
,
→
b
′
=
^
i
+
^
j
+
2
^
k
and
→
c
′
=
2
^
i
+
^
j
−
^
k
.
Then altitude of the parallelopiped formed by the vectors
→
a
,
→
b
,
→
c
having base formed by
→
b
and
→
c
is
(
→
a
,
→
b
,
→
c
and
→
a
′
,
→
b
′
,
→
c
′
are reciprocal system of vectors)
Q.
Three vectors
→
A
=
^
i
+
2
^
j
+
3
^
k
,
→
B
=
−
^
i
+
2
^
j
+
^
k
and
→
C
=
3
^
i
+
^
j
are given. If
→
A
+
t
→
B
is perpendicular to
→
C
then, t is
Q.
Given
→
a
=
^
i
+
^
j
−
^
k
,
→
b
=
−
^
i
+
2
^
j
+
^
k
and
→
c
=
−
^
i
+
2
^
i
−
^
k
.
A
unit vector perpendicular to both
→
a
+
→
b
&
→
b
+
→
c
is
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