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Byju's Answer
Standard XII
Mathematics
Vector Equation for Straight Line
which of the ...
Question
which of the following vector is perpendicular to the vector a= 2i+3j+4k ? a) i+j+k b) 4i+3j-2k c) i-3j+k d) i+2j-2k
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Similar questions
Q.
Prove that the following vectors are coplanar:
(i)
2
i
^
-
j
^
+
k
^
,
i
^
-
3
j
^
-
5
k
^
and
3
i
^
-
4
j
^
-
4
k
^
(ii)
i
^
+
j
^
+
k
^
,
2
i
^
+
3
j
^
-
k
^
and
-
i
^
-
2
j
^
+
2
k
^
Q.
Find the volume of the parallelopiped whose coterminous edges are represented by the vectors:
(i)
a
→
=
2
i
^
+
3
j
^
+
4
k
^
,
b
→
=
i
^
+
2
j
^
-
k
^
,
c
→
=
3
i
^
-
j
^
+
2
k
^
(ii)
a
→
=
2
i
^
-
3
j
^
+
4
k
^
,
b
→
=
i
^
+
2
j
^
-
k
^
,
c
→
=
3
i
^
-
j
^
-
2
k
^
(iii)
a
→
=
11
i
^
,
b
→
=
2
j
^
,
c
→
=
13
k
^
(iv)
a
→
=
i
^
+
j
^
+
k
^
,
b
→
=
i
^
-
j
^
+
k
^
,
c
→
=
i
^
+
2
j
^
-
k
^
Q.
Show the each of the following triads of vectors are coplanar:
(i)
a
→
=
i
^
+
2
j
^
-
k
^
,
b
→
=
3
i
^
+
2
j
^
+
7
k
^
,
c
→
=
5
i
^
+
6
j
^
+
5
k
^
(ii)
a
→
=
-
4
i
^
-
6
j
^
-
2
k
^
,
b
→
=
-
i
^
+
4
j
^
+
3
k
^
,
c
→
=
-
8
i
^
-
j
^
+
3
k
^
(iii)
a
^
=
i
^
-
2
j
^
+
3
k
^
,
b
^
=
-
2
i
^
+
3
j
^
-
4
k
^
,
c
^
=
i
^
-
3
j
^
+
5
k
^
Q.
The vectors
2
¯
i
−
3
¯
j
+
4
¯
¯
¯
k
,
¯
i
−
2
¯
j
+
3
¯
¯
¯
k
and
3
¯
i
+
¯
j
−
2
¯
¯
¯
k
Q.
For what value of λ are the vectors
a
→
and
b
→
perpendicular to each other if
(i)
a
→
=
λ
i
^
+
2
j
^
+
k
^
and
b
→
=
4
i
^
-
9
j
^
+
2
k
^
(ii)
a
→
=
λ
i
^
+
2
j
^
+
k
^
and
b
→
=
5
i
^
-
9
j
^
+
2
k
^
(iii)
a
→
=
2
i
^
+
3
j
^
+
4
k
^
and
b
→
=
3
i
^
+
2
j
^
-
λ
k
^
(iv)
a
→
=
λ
i
^
+
3
j
^
+
2
k
^
and
b
→
=
i
^
-
j
^
+
3
k
^
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