Theorem Real.Angle.abs_cos_eq_of_two_zsmul_eq

Modification history

2023-05-17 11:25
Mathlib/Analysis/SpecialFunctions/Trigonometric/Angle.lean
feat: port Analysis.SpecialFunctions.Trigonometric.Angle (#4040)
Added Real.Angle.abs_cos_eq_of_two_zsmul_eqView on Github →