JEE Main 2017 Solved Paper Solved Paper
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Question : 42 of 90
Marks:
+1,
-0
Let
= 2
+
− 3
and
=
+
.Let
be a vector such that |
−
| = 3 , | (
×
) ×
| = 3 and the angle between
and
×
be 30°.Then
⋅
is eqaula to :
[Main 2017]
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