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The real part of [1+cos(pi/5)+isin (pi/5...

The real part of `[1+cos(pi/5)+isin (pi/5)]^(-1)`

A

`1`

B

`(1)/(2)`

C

`(1)/(2) cos((pi)/(10))`

D

`(1)/(2) cos((pi)/(5))`

Text Solution

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The correct Answer is:
B
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