Mathlib v3 is deprecated. Go to Mathlib v4

Theorem real.sin_eq_sqrt_one_sub_cos_sq

Modification history

2021-04-14 18:40
src/analysis/special_functions/trigonometric.lean
feat(archive/100-theorems-list): add proof of Heron's formula (#6989) …
Added real.sin_eq_sqrt_one_sub_cos_sqView on Github →