In the polar formula for arc length, [tex]ds^{2}=dr^{2}+r^{2}d{\theta}^{2}[/tex], what is the exact meaning of the [tex]r^2[/tex] term multiplying [tex]d{\theta}^2[/tex]? Is it an initial distance from the origin? A final distance from the origin? The change in r from point a to point b? This baffles me to no end and nothing explains it.(adsbygoogle = window.adsbygoogle || []).push({});

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# Arc Length in Polar Coordinates

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