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Fungrim entry: 98a765

φ=2cos ⁣(π5)\varphi = 2 \cos\!\left(\frac{\pi}{5}\right)
\varphi = 2 \cos\!\left(\frac{\pi}{5}\right)
Fungrim symbol Notation Short description
GoldenRatioφ\varphi The golden ratio (1.618...)
Coscos(z)\cos(z) Cosine
Piπ\pi The constant pi (3.14...)
Source code for this entry:
    Formula(Equal(GoldenRatio, Mul(2, Cos(Div(Pi, 5))))))

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2021-03-15 19:12:00.328586 UTC