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Enjoy these free sheets. Each one has model problems worked out step by step, practice problems, as well as challenge questions at the sheets end. Plus each one comes with an answer key.

Law of Sines and Cosines Worksheet
(This sheet is a summative worksheet that focuses on deciding when to use the law of sines or cosines as well as on using both formulas to solve for a single triangle's side or angle)
 Sine, Cosine, Tangent Worksheets
 Vector Worksheet
 Unit Circle Worksheet
 Graphing Sine and Cosine Worksheet