Sunday, 11 February 2018

algebra precalculus - An 11-gon with complex numbers

Let A1A2A11 be a regular 11-gon inscribed in a circle of radius 2.




Let P be a point, such that the distance from P to the center of the circle is 3.



Find
[PA21+PA22++PA211]



Note: This can't be made a duplicate. There are no other answers for the other two posts. Please answer.

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