# Space/Cylindrical coordinates/Angle naive/Example

< Space

A spatial variant of
the polar coordinates
are the so-called *cylindrical coordinates*. A triple
is sent to the
Cartesian coordinates

< Space

A spatial variant of
the polar coordinates
are the so-called *cylindrical coordinates*. A triple
${}(r,\alpha ,z)\in \mathbb {R} _{+}\times [0,2\pi [\times \mathbb {R}$
is sent to the
Cartesian coordinates

- ${}(x,y,z)=(r\cos \alpha ,r\sin \alpha ,z)\,.$