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Byju's Answer
Standard XII
Mathematics
Addition of Vectors
If a⃗ and b...
Question
If
→
a
a
n
d
→
b
are the vectors
−
−
→
A
B
a
n
d
−
−
→
B
C
determined by the adjacent sides of a regular hexagon. What are the vectors determined by the other sides taken in order?
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Solution
Given:
−
−
→
A
B
=
→
a
−
−
→
B
C
=
→
b
EF is parallel to BC and equal to its length
hence ,
−
−
→
F
E
=
→
b
and ED vector is also eqaul to AB
−
−
→
E
D
=
→
a
let the center point is O
then
−
−
→
B
O
=
−
−
→
B
C
+
−
−
→
C
O
=
→
b
−
→
a
now
−
−
→
A
F
is parallel to
−
−
→
B
O
hence ,
−
−
→
A
F
=
→
b
−
→
a
And
−
−
→
C
D
vector is also equal to
−
−
→
B
O
Hence,
−
−
→
C
D
=
→
b
−
→
a
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