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Rectangular
(x,y,z)
Cylindrical
(r,θ,z)
Spherical
(ϕ,θ,ρ)
Rectangular → Cylindrical
r = sqrt(x2 + y2)
θ = arctan(y/x)
z = z
Rectangular → Spherical
ρ = sqrt(x2 + y2 + z2)
θ = arctan(y/x)
ϕ = arccos(z sqrt(x2 + y2 + z2))
Cylindrical → Rectangular
x = r cos(θ)
y = r sin(θ)
z = z
Cylindrical → Spherical
ρ = sqrt(r2 + z2)
θ = θ
ϕ = arctan(r/z)
Spherical → Rectangular
x = ρ sin(ϕ) cos(θ)
y = ρ sin(ϕ) sin(θ)
z = ρ cos(ϕ)
Spherical → Cylindrical
r = ρ sin(ϕ)
θ = θ
z = ρ cos(ϕ)