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Let f(x)=sinz and g(z)=cos z. If denot...

Let `f(x)=sinz and g(z)=cos z`. If denotes a composition of functions, then `(f + ig ) * (f-ig)` (where `i =sqrt-1`) is

A

`ie^(-e^(-iz))`

B

`ie^(-e^(iz))`

C

`-ie^(-e^(-iz))`

D

None of these

Text Solution

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The correct Answer is:
B
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