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If a=e^(itheta) then (1+a)/(1-a) is equ...

If `a=e^(itheta)` then `(1+a)/(1-a)` is equal to

A

`cot(theta)/(2)`

B

`tan theta`

C

`I cot(theta)/(2)`

D

`I tan (theta)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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