Vector Operations Dot Product (Jee Mains) | ExamDuo
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Scalar and Vector Products
Medium
Vector Operations Dot Product
Let
a
=
∧
i
+
2
∧
j
−
∧
k
,
b
=
∧
i
−
∧
j
and
c
=
∧
i
−
∧
j
−
∧
k
be three given vectors. If
r
is a vector such that
r
×
a
=
c
×
a
and
r
⋅
b
=
0
, then
r
⋅
a
is equal to ......... .
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