Minimal Polynomials of Algebraic Cosine Values at Rational Multiples of π
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چکیده
Lehmer proved that the values of the cosine function evaluated at rational multiples of π are algebraic numbers. We show how to determine explicit, closed form expressions for the minimal polynomials of these algebraic numbers.
منابع مشابه
Closed-form formulae for the derivatives of trigonometric functions at rational multiples of pi
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تاریخ انتشار 2016