lean_workbook_plus_16723

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

$\frac{1}{\sin k}>1$ for $k \in (0,\frac{\pi}{2})$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_16723 (k : ℝ) (h₁ : 0 < k) (h₂ : k < Real.pi / 2) : 1 / Real.sin k > 1   :=  by sorry

Source