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CUSAT 2021 BTech Solved Paper Shift 2

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Question : 182 of 250
 
Marks: +1, -0
If
→
a
+
→
b
+
→
c
=
→
0
 and |
→
a
|=3,|
→
b
|=4 and |
→
c
|=√37, then the angle between
→
a
 and
→
b
 is
Validate
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