Have a look at Math::Trig as is contains cartesian_to_cylindrical,cartesian_to_spherical etc. so should already do what you need.

In reply to Re: Polar Co-Ordinates: Rotating a 3D cartesian point around a fixed axis? by RichardK
in thread Polar Co-Ordinates: Rotating a 3D cartesian point around a fixed axis? by fraizerangus

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