Theorems · Theorem · real analysis
Real.tan_pi_div_four
Real.tan (Real.pi / 4) = 1
- Cited by
- 1 results in Mathlib
- Foundations
- Depth 187 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites12
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.pistatement and proof · cited by 1,774
- ne_of_gtproof · cited by 637
- Real.sqrtproof · cited by 545
- Real.sinproof · cited by 389
- div_posproof · cited by 337
- div_selfproof · cited by 237
- Real.tanstatement · cited by 100
- Real.sqrt_pos_of_posproof · cited by 50
- Real.tan_eq_sin_div_cosproof · cited by 15
- Real.sin_pi_div_fourproof · cited by 3
- Real.cos_pi_div_fourproof · cited by 2
Cited by1
Results whose statement or proof uses this declaration.
- Real.arctan_oneproof · cited by 7