Find roots of z^n=(z+1)^n and show that points which represent them are collinear.

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Hey ! How did you find the part at 1:51 where you wrote "1/Z = (1-2sin²(rPI/n) -1 +2isin(rPI/n)*cosrPi/n please ?

vincentm
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For make 1-cos -1 is common... How 1 and -1 cancelled

SmilingEquestrianHelmet-fznm
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shouldnt the last part be all positive? since sine(-t) = -sine (t) while cos (-t) = cos (t)

theovictorcavite
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But how do we know that all points are collinear by Just equating the Real part?

sanskritisarraf