1.

I: If z_1and z_2 are two nonzero complex numbers such that |z_1+z_2|=|z_1|+|z_2| " then " agz_(1)-argz_(2)" is " pi//2 II : If z_1 and z_2 are two complex numbers such that |z_1z_2|=1 and arg z_1 - arg z_2=pi//2" then " bar(z)_1 barz_2=-i

Answer»

only I is TRUE
only II is true
both I and II are true
NEITHER I nor II are true

ANSWER :B


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