lean_workbook_plus_17252
OpenProve that
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_17252 (α β : ℝ) : (sin α) ^ 2 - (sin β) ^ 2 = sin (α + β) * sin (α - β) := by sorry
Source
Prove that
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_17252 (α β : ℝ) : (sin α) ^ 2 - (sin β) ^ 2 = sin (α + β) * sin (α - β) := by sorry