With the usual notation in DeltaABC if ...

With the usual notation in `DeltaABC` if
`angleA+angle B=120^(@),a=sqrt(3)+1 and b=sqrt(3)-1` then the ratio `angle A:angleB` is

A

`5:3`

B

`3:1`

C

`9:7`

D

`7:1`

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The correct Answer is:

D

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