JEE Main 10 April 2015 Paper

Section: Mathematics
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Question : 85 of 90
 
Marks: +1, -0
Let
→
a
and
→
b
be two unit vectors such that |
→
a
+
→
b
|
=√3
.If
→
c
=
→
a
+2
→
b
+3(
→
a
×
→
b
)
,then 2|
→
c
|
is equal to :
[Main 10 April 2015]
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