JEE Main 2017 Solved Paper Solved Paper

Section: Mathematics
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Question : 42 of 90
 
Marks: +1, -0
Let
a
=2
i
+
j
3
k
and
b
=
i
+
j
.Let
c
be a vector such that |
c
a
|
=3
,
|(
a
×
b
)
×
c
|=3
and the angle between
c
and
a
×
b
be 30°.Then
a
c
is eqaula to :
[Main 2017]
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