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If z + 1/z = 1 , then ( (z^(20) + 1) ...

If `z + 1/z = 1 , ` then ` ( (z^(20) + 1) (z^(40) + 1) (z^(60) +1 ) )/(z^(60) )` =

A

`-2`

B

`2`

C

`1`

D

`-1`

Text Solution

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The correct Answer is:
B
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TS EAMCET PREVIOUS YEAR PAPERS-TS EAMCET ENGINEERING ENTRANCE EXAM QUESTION PAPER (2018)-MATHEMATICS
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