proposition: Lemma injective_interval_sin : injective_interval (- PI / 2) (PI / 2) sin.
proof: Proof. apply strictly_increasing_in_injective_in, strictly_increasing_interval_sin. Qed.
imports: Rbase Rtactic Lra Ranalysis Ranalysis5 Rtrigo AltSeries Rfunctions Rinterval Ranalysis_def Ranalysis_def_simpl Ranalysis_facts Rextensionality Rpser_usual Rsequence_cv_facts MyRIneq Tactics