Book:Murray R. Spiegel/Mathematical Handbook of Formulas and Tables/Chapter 12

Distance $d$ between Two Points $\map {P_1} {x_1, y_1, z_1}$ and $\map {P_2} {x_2, y_2, z_2}$

 * $12.1$ Distance Formula in 3 Dimensions

Equation of Sphere in Rectangular Coordinates

 * $12.20$: Equation of Sphere in Rectangular Coordinates

Equation of Sphere in Cylindrical Coordinates

 * $12.21$: Equation of Sphere in Cylindrical Coordinates

Equation of Sphere in Spherical Coordinates

 * $12.23$: Equation of Sphere in Spherical Coordinates