lean_workbook_plus_60372
OpenProve that
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_60372 : ∀ x y : ℝ, 2 * sin x * cos y = sin (x + y) + sin (x - y) := by sorry
Source
Prove that
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_60372 : ∀ x y : ℝ, 2 * sin x * cos y = sin (x + y) + sin (x - y) := by sorry