Theorem Real.two_mul_arctan

Modification history

2025-07-31 14:34
Mathlib/Analysis/SpecialFunctions/Trigonometric/Arctan.lean
feat(Arctan): add more `simp` lemmas (#27719) …
Modified Real.two_mul_arctanView on Github →
2024-02-13 23:17
Mathlib/Analysis/SpecialFunctions/Trigonometric/Arctan.lean
feat: arctangent addition and Machin's formula for π (#9847) …
Added Real.two_mul_arctanView on Github →