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Vector Algebra Part 1

Section: Mathematics
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Question : 21 of 100
 
Marks: +1, -0
Let the vectors
→
a
,
→
b
,
→
c
 be such that |
→
a
|=2,|
→
b
|=4 and |
→
c
|=4. If the projection of
→
b
 on
→
a
 is equal to the projection of
→
c
 on
→
a
 and
→
b
 is perpendicular to
→
c
, then the value of |
→
a
+
→
b
−
→
c
|is ______.
[5 Sep 2020 Shift 2]
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