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$\cos(\frac{2 \pi}{n}) = 1 \ \forall n \geq 1$? Need help in finding my mistake.

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#trigonometry #complex-numbers #pi #fake-proofs
193
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Confused about Pi & Normal Numbers?

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#pi #decimal-expansion
56
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Would subsequences of digits of $\pi$ be normal if $\pi$ were itself normal?

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#sequences-and-series #pi
338
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Why is $\log_{10}\pi \simeq 0.5$?

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#logarithms #pi
161
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Python Forever Pi Number Function, Math Formula?

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#pi #python
103
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A purely geometric proof that pi is irrational?

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#geometry #proof-writing #pi
134
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Identity involving numbers 7, 16, 113, Pi, and Floor function

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#recreational-mathematics #pi #ceiling-and-floor-functions
841
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The most complex formula for the golden ratio $\varphi$ that I have ever seen. How was it achieved?

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#exponential-function #pi #continued-fractions #golden-ratio #ramanujan-summation
435
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Is this a valid mathematical proof?

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#geometry #trigonometry #proof-verification #pi
729
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Occurences of primes in pi

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#prime-numbers #pi
788
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How to calculate $π$ from first principles

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#geometry #pi
67
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Problem with discrepancy of results, one of which is close to $\sqrt{\frac{\varphi^5}{5}}$

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#prime-numbers #riemann-zeta #pi #coprime
234
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Why is $e^{i\pi}= -1$

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#exponential-function #irrational-numbers #pi #euler-mascheroni-constant #spherical-trigonometry
55
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Suggestions for interesting PI calculation

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#sequences-and-series #pi
1.8k
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Consecutively Adding Sines

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#pi #trigonometric-series

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