lean_workbook_plus_38361
OpenProve that
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_38361 (a b : ℝ) : |Real.cos a| + |Real.cos b| ≥ |Real.sin (a + b)| := by sorry
Source
Prove that
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_38361 (a b : ℝ) : |Real.cos a| + |Real.cos b| ≥ |Real.sin (a + b)| := by sorry