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Question

If ABCDEF is a regular hexagon with AB=a and BC=b,
(where |a|=|b|) then CE

A
vb
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B
b
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C
b2a
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D
None of these
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Solution

The correct option is C b2a
In ΔABC,AB+BC=AC
AC=a+b.....(i)
AD is parallel to BC and AD=2BC, therefore AD=2b.

In ΔACD,AC+CD=AD
CD=2b(a+b)=ba
In
ΔCDE,CE=CD+DE=ba+(a)=b2a

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