lean_workbook_plus_5250
OpenDemonstrate the identity:
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_5250 (a x : ℝ) : Real.sin (a + x) - Real.sin (a - x) = 2 * Real.cos a * Real.sin x := by sorry
Source
Demonstrate the identity:
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_5250 (a x : ℝ) : Real.sin (a + x) - Real.sin (a - x) = 2 * Real.cos a * Real.sin x := by sorry