AP EAMCET Engineering 24 Apr 2017 Shift 1 Paper

Section: Mathematics
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Question : 34 of 160
 
Marks: +1, -0
Let
−
a
=4
−
i
+5
−
j
−
−
k
,
−
b
=
−
i
−4
−
j
+5
−
k
,
−
c
=3
−
i
+
−
j
−
−
k
and let
−
α
be a vector perpendicular to both
−
a
‌and
‌
−
b
such that
−
α
.
−
c
=63.
Then
−
α
=
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