## The Cylindrical Coordinate System

We can write P in any coordinate system. In the Euclidean system we resolve the radial vector from the origin to the point P onto each coordinate axis.

We get

\[x= \rho cos \phi\]

\[y= \rho sin \phi\]

\[z=z\]

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We can write P in any coordinate system. In the Euclidean system we resolve the radial vector from the origin to the point P onto each coordinate axis.

We get

\[x= \rho cos \phi\]

\[y= \rho sin \phi\]

\[z=z\]