Consider `z_(1)andz_(2)` are two complex numbers
such that `|z_(1)+z_(2)|=|z_(1)|+|z_(2)|`
Statement `-1` `arg (z_(1))-arg(z_(2))=0`
Statement `-2` The complex numbers `z_(1)` and `z_(2)` are collinear.

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State true of false for the following: Let z_(1) and z_(2) be two complex number's such that |z_(1)+z_(2)|=|z_(1)|+|z_(2)| then arg (z_(1)-z_(2))=0

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If z and we are two complex numbers such that |zw|=1 and arg(z)-arg(w)=(pi)/(2) then show that barzw=-i

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If the complex numbers z_(1) and z_(2) arg (z_(1))- arg(z_(2))=0 then showt aht |z_(1)-z_(2)|=|z_(1)|-|z_(2)| .