If `z_1a n dz_2` are conjugate to each other then find `a r g(-z_1z_2)dot`

If z_(1) and z_(2) are conjugate to each other , find the principal argument of (-z_(1)z_(2)) .

If z^(1),z^(2) and z^(3),z^(4) are two pairs of conjugate complex number, then find arg 2((z_(1))/(z_(4)))+ ((z_(2))/(z_(3))).

Let z_1a n dz_2 be two complex numbers such that ( z )_1+i( z )_2=0a n d arg(z_1z_2)=pidot Then, find a r g(z_1)dot

If z_(1),z_(2) and z_(3),z_(4) are two pairs of conjugate complex numbers,hen find the value of arg(z_(1)/z_(4))+arg(z_(2)/z_(3))*a

If z_(1),z_(2) and z_(3),z_(4) are two pairs of conjugate complex numbers then arg((z_(1))/(z_(4)))+arg((z_(2))/(z_(3)))=

If z_(1),z_(2) and z_(3),z_(4) are two pairs of conjugate complex numbers then arg ((z_(1))/(z_(4)))+arg((z_(2))/(z_(3))) equals