Let zzz be a complex number with ∣z∣=1|z|=1∣z∣=1 and arg(z)=θ\text{arg}(z) = \thetaarg(z)=θ. If w=11−zw = \frac{1}{1-z}w=1−z1, which expression represents Re(w)\text{Re}(w)Re(w)?
12\frac{1}{2}21
111
cosθ\cos\thetacosθ
000