The position vector ##\vec{r}## in cartesian coordinates is: ##\vec{r} = x \hat{x} + y \hat{y}##, in polar coordinates is: ##\vec{r} = r \hat{r}##. But, given a curve s in somewhere of plane, with tangent unit vector ##\hat{t}## and normal unit vector ##\hat{n}## along of s, exist a definition for the position vector in terms of ##\hat{t}## and vector ##\hat{n}##?(adsbygoogle = window.adsbygoogle || []).push({});

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# Position vector in curvilinear coordinates

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