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If |z|ltsqrt(2)-1, then |z^(2)+2 z cos a...

If `|z|ltsqrt(2)-1`, then `|z^(2)+2 z cos alpha|` is less than

A

1

B

`sqrt(2)+1`

C

`sqrt(2)-1`

D

none of these

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A
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HIMALAYA PUBLICATION-COMPLEX NUMBERS-QUESTION BANK
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