Sin = 2/3 what is the value of cot

An education expert is researching teaching methods and wishes to interview teachers from a particular school district. she randomly selects ten schools from the district and interviews all of the teachers at the selected schools. which type of sample did she use in this study? a)systematic sample b)probability sample c)stratified sample d)cluster sample

During the antebellum period, religion was used by many americans to a) justify the existence of slavery. b) unify all churches against slavery. c) allow slaves to become ordained ministers. eliminate d) inspire slaves to spread christianity in africa.

Article 11 of the constitution defines the role of?