The polar form of the position vector is defined as r = r\vec{r} to express the position in terms of its magnitude (r) and direction (θ). The position vector \vec{r} can be represented in Cartesian coordinates as \vec{r} = x\vec{i} + y\vec{j}, where r is the magnitude calculated as r = √(x² + y²). In polar coordinates, the two parameters required to define a position are indeed r and θ, which correspond to the radial distance and the angle from the positive x-axis, respectively.
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The two parameters are [itex]r[/itex] and [itex]\theta[/itex].sherlockjones said:If we have a position vector [tex]\vec{r} = x\vec{i} + y\vec{j}[/tex] why is the polar form of the equation [tex]r = r\vec{r}[/tex]? Don't we need two parameters to define a postition? And [tex]r[/tex] is the magnitude of [tex]\vec{r}[/tex]?
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