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If z(k)=e^(itheta(k)) for k=1,2,3,4 wher...

If `z_(k)=e^(itheta_(k))` for `k=1,2,3,4` where `i^(2)=-1` and if `|Sigma_(k=1)^(4)(1)/(z_(k))|=1`, then `|Sigma_(k=1)^(4)z_(k)|` is equal to

A

a) 4

B

b) 1

C

c) 2

D

d) 3

Text Solution

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The correct Answer is:
B
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