Among the complex numbers z which satisfies `|z-25i|<=15`, find the complex numbers z having

Among the complex numbers z ,which satisfies |z-25i<=15 then |max.arg z - min arg z| is pi-2tan^(-1)((l)/(m)) then l+m is

Among the complex numbers, z satisfying |z+1-i| le 1 , the number having the least positive argument is :

The complex number z which satisfies the condition |(i +z)/(i-z)|=1 lies on:

The complex number z which satisfies the condition |(i+z)/(i-z)| = 1 lies on

The complex number z which satisfies the Equation |(i+z)/(i-z)|=1 lies on

The complex number z which satisfies the condition |frac{i+z}{i-z}| = 1 lies on.

The complex number z= which satisfied the condition |(i+z)/(i-z)|=i lies on