If -1+sqrt(- 3)=r e^(i \ theta) , then t...

If `-1+sqrt(- 3)=r e^(i \ theta)` , then `theta` is equal to

A

`2pi//3`

B

`-2pi//3`

C

`pi//3`

D

`-pi//3`

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The correct Answer is:

A

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