CUSAT 2021 BTech Solved Paper Shift 1

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Question : 193 of 250
 
Marks: +1, -0
The non-zero vectors
→
a
,
→
b
and
→
c
are related by
→
a
=8
→
b
and
→
c
=−7
→
b
. Then, the angle between
→
a
and
→
c

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