1- i -1- i is equal toA- cos-2-i sin-2- cos-2-i sin-2C- sin-2-i cos-2D- None of these

1 i/1+i=(1 i)(1 i)/(1+i)(1 i)=1+(i)^2 2i/1+1= i Which can be written as cosπ/2 isinπ/2 ...

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Algebra of Complex Numbers

1- i /1+ i is...

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$\frac{1 - i}{1 + i}$ is equal to

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None of these

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