Using Trigonometric Identities – Algebra 2 Worksheet with Proofs & ApplicationsThis in-depth Algebra 2 worksheet focuses on using and proving trigonometric identities, including the Pythagorean identity and its related forms. It is fully aligned with Common Core Standard HSF.TF.C.8, providing rigorous and scaffolded practice for students to build confidence and fluency with trig identities. This resource is designed for flexibility in your classroom. Use it for in-class practice, independent