This product is part of Unit 11 (Reciprocal Functions). Get the full unit or even better, the full year below: Algebra 2 Full Year Curriculum (lessons, Homework, Reviews, Assessments, Answer Keys, All editable)This Trigonometry lesson introduces the reciprocal trigonometric functions— cosecant, secant, and cotangent—as the inverses of sine, cosine, and tangent. Students learn how to define and evaluate these functions using the unit circle, interpret their relationships algebraically, and iden