[" 4.If "|__z_(1)+z_(2)l=|z_(1)-z_(2)l," then the difference in the arguments of "z_(1)" and "z_(2)" is "=:cos(lambda)/(2)<=0],[" 1) "(pi)/(4)," 2) "(pi)/(3)," 3) "(pi)/(2)]

If |z_(1)+z_(2)|=|z_(1)-z_(2)| , then the difference of the arguments of z_(1) and z_(2) is

If |z_(1) + z_(2)| = |z_(1) - z_(2)| then the difference in the arguments of z_(1) and z_(2) is

If |z_(1)+z_(2)|=|z_(1)-z_(2)| then the difference of the arguments of z_(1) and z_(2) is

If |z_(1) + z_(2)|=|z_(1)-z_(2)| , then the difference in the amplitudes of z_(1) and z_(2) is

If abs(z_1+z_2) = abs(z_1-z_2) , then the difference in the amplitudes of z_1 and z_2 is

Consider the complex numbers z_(1) and z_(2) Satisfying the relation |z_(1)+z_(2)|^(2)=|z_(1)|^(2) + |z_(2)|^(2) Possible difference between the argument of z_(1) and z_(2) is

Consider the complex numbers z_(1) and z_(2) Satisfying the relation |z_(1)+z_(2)|^(2)=|z_(1)|^(2) + |z_(2)|^(2) Possible difference between the argument of z_(1) and z_(2) is

If arg(z_(1))=170^(@) andarg (z_(2))=70^(@), then find the principal argument of z_(1)z_(2)