Solve for θ
\theta =-\arcsin(\frac{3-\rho }{3})+2\pi n_{1}+\pi \text{, }n_{1}\in \mathrm{Z}
\theta =\arcsin(\frac{3-\rho }{3})+2\pi n_{2}\text{, }n_{2}\in \mathrm{Z}\text{, }\rho \geq 0\text{ and }\rho \leq 6
Solve for ρ
\rho =3\left(-\sin(\theta )+1\right)
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