Theorems · Theorem · real analysis
Real.cos_eq_zero_iff_sin_eq
∀ {x : ℝ}, Real.cos x = 0 ↔ Real.sin x = 1 ∨ Real.sin x = -1- Cited by
- 0 results in Mathlib
- Foundations
- Depth 157 from the axioms · uses propext, Classical.choice, Quot.sound
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Cites8
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Realstatement and proof · cited by 25,697
- Real.cosstatement and proof · cited by 424
- Real.sinstatement and proof · cited by 389
- sqproof · cited by 280
- mul_eq_zeroproof · cited by 94
- left_eq_addproof · cited by 15
- Real.sin_sq_add_cos_sqproof · cited by 12
- mul_self_eq_one_iffproof · cited by 7
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