1.

If bar(a), bar(b) represent bar(AB), bar(BC) respectively of a regular hexagon ABCDEF then bar(CD), bar(DE), bar(EF), bar(FA)

Answer»

`BAR(B)-bar(a),-bar(a), -bar(b), bar(a)-bar(b)`
`bar(a)-bar(b), bar(a), bar(b), bar(b)-bar(a)`
`bar(b)-bar(a), bar(a), bar(b), bar(a)-bar(b)`
`bar(a)-bar(b), -bar(a), -bar(b), bar(b)-bar(a)`

ANSWER :A


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