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prove that tan(i" In"((a-ib)/(a+ib)))=(2...

prove that tan`(i" In"((a-ib)/(a+ib)))=(2ab)/(a^(2)-b^(2))`
(where a, b `inR^(+)and i=sqrt(-1)`).

A

`(ab)/(a^(2)+b^(2))`

B

`(2ab)/(a^(2)-b^(2))`

C

`(ab)/(a^(2)-b^(2))`

D

`(2ab)/(a^(2)+b^(2))`

Text Solution

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The correct Answer is:
b
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