FromPolarCoordinates

FromPolarCoordinates[{r,θ}] gives the {x,y} Cartesian coordinates corresponding to the polar coordinates {r,θ}.

FromPolarCoordinates[{r,θ1,…,θn-2,ϕ}] gives the coordinates corresponding to the hyperspherical coordinates {r,θ1,…,θn-2,ϕ}.

Examples

Convert polar to Cartesian coordinates:

FromPolarCoordinates[{1, Pi/4}]
(* {1/Sqrt[2], 1/Sqrt[2]} *)

Please visit the official Wolfram Language Reference for more details.