Vector Algebra Part 2

Section: Mathematics
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Question : 74 of 100
 
Marks: +1, -0
Let
→
a
=
^
i
+
^
j
+
^
k
,
→
b
and
→
c
=
^
j
−
^
k
be three vectors such that
→
a
×
→
b
=
→
c
and
→
a
.
→
b
=1
. If the length of projection vector of the vector
→
b
on the vector
→
a
×
→
c
is l, then the value of 3l2 is equal to _______.
[27 Jul 2021 Shift 1]
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