lean_workbook_plus_12215

Open

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

Evaluate $\sin \frac{\pi}{2}$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_12215 : sin (π / 2) = 1   :=  by sorry

Source