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# Distance Between Polar Points

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In this lesson, we will learn how to find the distance between two polar points. At this point, we know how to use the distance formula to find the distance between any two rectangular points on the rectangular plane. We can convert each polar point into a rectangular point and then use the distance formula. That method is quite slow, therefore, we can derive a simple formula based on the law of cosines. Additionally, we can derive this formula by plugging in r cos θ for x and r sin θ for y in the distance formula. Either way, we will end up with a formula that allows us to find the distance between two polar points.

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