Proof of proveit.trigonometry.sine_interval theorem

import proveit
theory = proveit.Theory() # the theorem's theory

%proving sine_interval

With these allowed/disallowed theorem/theory presumptions (e.g., to avoid circular dependencies), we begin our proof of
sine_interval:
(see dependencies)

sine_interval may now be readily provable (assuming required theorems are usable).  Simply execute "%qed".