Theorem Real.Angle.cos_eq_iff_eq_or_eq_neg

Modification history

2023-05-17 11:25

Mathlib/Analysis/SpecialFunctions/Trigonometric/Angle.lean

feat: port Analysis.SpecialFunctions.Trigonometric.Angle (#4040)

Added Real.Angle.cos_eq_iff_eq_or_eq_neg View on Github →