If `|z-25i| lt= 15.` then `|"maximum " arg(z) - "minimum " arg(z)|` equals

If |z- 25i| le 15 , then |maximum arg (z) - minimum arg (z)| equals

If |z-25i|le15 , then |maximum arg(z) - minimum arg(z)| equals (A) (pi)/(2)+cos^(-1)((3)/(5)) (B) sin^(-1)((3)/(5))-cos^(-1)((3)/(5)) (C) 2cos^(-1)((4)/(5)) (D) 2cos^(-1)((1)/(5))

If |z-25i|<=15, then value of max(arg(z))

If |z-25i|le15 , then find (i) Maximum |z| (2) Maximum arg (z) (3) minimum |z| (4) Minimum arg (z)

If |z-25i|le15 , then find (i) Maximum |z| (2) Maximum arg (z) (3) minimum |z| (4) Minimum arg (z)

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