1.

If |z_(1) | = |z_(2)| = 1 , then |z_(1) + z_(2)| =

Answer»

`|(1)/(z_(1)) + (1)/(z_(2))|`
`| (1)/(z_(1)) - (1)/(z_(2))|`
`| (1)/(z_(1)) * (1)/(z_(2))|`
`| (1)/(z_(1)^(2)) + (1)/(z_(2)^(2)))|`

ANSWER :A


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