Polar coordinates
= Polar coordinates
{wiki}
= Polar integration
{synonym}
Polar coordinates use $x=r\cos\theta$, $y=r\sin\theta$ and area element $r\,dr\,d\theta$.
= Polar coordinates
{wiki}
= Polar integration
{synonym}
Polar coordinates use $x=r\cos\theta$, $y=r\sin\theta$ and area element $r\,dr\,d\theta$.