lean_workbook_plus_14320

Open

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

$\tan\left(\dfrac{\pi}{4}\right)=1$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_14320 : tan (π / 4) = 1   :=  by sorry

Source