1.

Let z1, z2, z3 be three vertices of an equilateral triangle circumscribing the circle `|z| = 1/2`. If `z1 = 1/2+ ((sqrt3)iota)/2` and z1, z2, z3 are in the anticlockwise sense then z2 is

Answer» `abs(z)=1/2`,it represents circle withcircle center `(0.0)`r=1/2
by drawing figure we get,since, z_2 is anticlockwise z_1=-1/2
`z_1=1/2+sqrt(3)i/2`
andArgument (z)=`sqrt(3)`
`tan theta=sqrt(3)``theta=60^@``Abs(z)=sqrt((1/2)^2+(sqrt(3)/2)^2)=1`similarly`abs(z_1)=abs(z_2)=abs(z_3)`
So,`abs(z)`=1and `z` lies on the real axis of the positive direction`:.` Ans=D


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