MathematicsMedium53×since 2002Q3184Let the lines (2 −-− i)z = (2 + i)z‾\overline zz and (2 +++ i)z + (i −-− 2)z‾\overline zz −-− 4i = 0, (here i² = −-−1) be normal to a circle C. If the line iz + z‾\overline zz + 1 + i = 0 is tangent to this circle C, then its radius is :A322{3 \over {2\sqrt 2 }}223B323\sqrt 232C122{1 \over {2\sqrt 2 }}221D32{3 \over {\sqrt 2 }}23Check answerSkip