New posts in pi

Evaluating $\lim_{n \to \infty}\frac{n}{2}\sqrt{2-2\cos\left(\frac{360^\circ}{n}\right)}$

calculus geometry limits trigonometry pi

Why are turns not used as the default angle measure?

geometry trigonometry math-history pi plane-geometry

Philosophical question about Pi and connections in maths

calculus limits pi

how can we show $\frac{\pi^2}{8} = 1 + \frac1{3^2} +\frac1{5^2} + \frac1{7^2} + …$?

sequences-and-series pi

What Gauss *could* have meant?

complex-numbers soft-question pi

Why is it that this gives a good approximation of $\pi$?

approximation pi

Which is bigger: $(\pi+1)^{\pi+1}$ or $\pi^{\pi+2}$?

inequality pi

How was this approximation of $\pi$ involving $\sqrt{5}$ arrived at?

approximation pi golden-ratio diophantine-approximation

$\pi^4 + \pi^5 \approx e^6$ is anything special going on here?

exponential-function approximation pi constants diophantine-approximation

How to find continued fraction of pi

pi continued-fractions

There's something strange about $\sum \frac 1 {\sin(n)}$.

sequences-and-series summation irrational-numbers pi fractals

How do you calculate the decimal expansion of an irrational number?

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How are first digits of $\pi$ found?

algebra-precalculus irrational-numbers pi

Geometric intuition for $\pi /4 = 1 - 1/3 + 1/5 - \cdots$?

real-analysis sequences-and-series number-theory intuition pi

Is this formula for $\pi$ already known?

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A novelty integral for $\pi$

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Pi Estimation using Integers

algebra-precalculus approximation pi

Are my results new? [closed]

interpolation pi

Is sin(x) necessarily irrational where x is rational?

trigonometry irrational-numbers pi rational-numbers

Does the number pi have any significance besides being the ratio of a circle's diameter to its circumference?

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