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Basic mathematical constants.
Constants
Euler’s number, e = 2.71828…
1/π = 0.318309…
1/√2 = 0.707106…
2/π = 0.636619…
2/√π = 1.12837…
π/2 = 1.57079…
π/3 = 1.04719…
π/4 = 0.785398…
π/6 = 0.523598…
π/8 = 0.392699…
ln 2 = 0.693147…
ln 10 = 2.30258…
log2 10 = 3.32192…
log2 e = 1.44269…
log10 2 = 0.301029…
log10 e = 0.434294…
Archimedes’ constant, π = 3.14159…
√2 = 1.41421…
A turn, τ = 6.28318…