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Fungrim entry: f8d280

π=16atan ⁣(15)4atan ⁣(1239)\pi = 16 \operatorname{atan}\!\left(\frac{1}{5}\right) - 4 \operatorname{atan}\!\left(\frac{1}{239}\right)
TeX:
\pi = 16 \operatorname{atan}\!\left(\frac{1}{5}\right) - 4 \operatorname{atan}\!\left(\frac{1}{239}\right)
Definitions:
Fungrim symbol Notation Short description
Piπ\pi The constant pi (3.14...)
Atanatan(z)\operatorname{atan}(z) Inverse tangent
Source code for this entry:
Entry(ID("f8d280"),
    Formula(Equal(Pi, Sub(Mul(16, Atan(Div(1, 5))), Mul(4, Atan(Div(1, 239)))))))

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2020-04-08 16:14:44.404316 UTC