KCET 2006 Math Solved Paper

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Question : 19 of 60
 
Marks: +1, -0
If ˙
a
and
b
are the two vectors such that |
a
|
=33
,
|
b
|=4
and |
a
+
b
|
=7
, then the angle between
a
and
b
is
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