[1.," If "|z-i|<1," then the value of "|z+12-6i|" is less than "],[[" (a) "14," (b) "2," (c) "28]]

If |z - 1| = |z + 1| = |z - 2i|, then value of |z| is

If z_(1) = 2 - i , z_(2) = 1 + i , " find " |(z_(1) + z_(2) + 1)/( z_(1) -z_(2) + 1)|

If z_(1)=2-i,z_(2)=1+i, find |(z_(1)+z_(2)+1)/(z_(1)-z_(2)+i)|

If z_1=2-i ,z_2=1+i , find |(z_1+z_2+1)/(z_1-z_2+i)|

If z_1=2-i ,\ z_2=1+i , find |(z_1+z_2+1)/(z_1-z_2+i)| .

If z_1=2-i ,\ z_2=1+i , find |(z_1+z_2+1)/(z_1-z_2+i)|

If z_1=2-i ,z_2=1+i , find |(z_1+z_2+1)/(z_1-z_2+i)|

If z_(1),z_(2),z_(3) are the vertices of triangle such that |z_(1)-i|=|z_(2)-i|=|z_(3)-i| and z_(1)+z_(2)=3i-z_(3) then area of triangle is