How to calculate the dot product of two big vectors in polar coordinate system?
Last edited by mr fantastic; Mar 24th 2011 at 03:55 AM. Reason: Copied title into main body of post.
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Note that $\displaystyle \mathbf{a}\cdot\mathbf{b}=ab\cos(\theta),$ where $\displaystyle a=|\mathbf{a}|,\;b=|\mathbf{b}|,\;\text{and}\;\the ta$ is the angle between the two vectors. The RHS should be fairly straight-forward in polar coordinates.
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