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The real value of theta for which the e...

The real value of `theta ` for which the expression `(1+icostheta)/(1-2icostheta)` is real number is

A

`npi+(pi)/(4)`

B

`npi+(-1)^(n)(pi)/(4)`

C

`2npi+-(pi)/(2)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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