(adsbygoogle = window.adsbygoogle || []).push({}); Converting from Cartesian to Cylindrical coords - but division by zero!!!

1. The problem statement, all variables and given/known data

Let's say I want to convert the point P(0, -4, 3) to cylindrical.

To convert from Cartesian to Cylindrical coordinates, one must use the formulas listed below.

2. Relevant equations

[tex]\rho\,=\,\sqrt{x^2\,+\,y^2}[/tex]

[tex]\phi\,=\,tan^{-1}\left(\frac{y}{x}\right)[/tex]

[tex]z\,=\,z[/tex]

3. The attempt at a solution

What do I do about the division by zero produced by using the second equation for [itex]\phi[/itex]?

[tex]\phi\,=\,tan^{-1}\left[\frac{(-4)}{(0)}\right][/tex]

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# Homework Help: Converting from Cartesian to Cylindrical coords - but division by zero

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