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"Help your students understand the broad uses of trigonometry as a tool in problem solving. With this lesson students will reinforce their understanding of identifying equivalent trigonometric expressions. Included is a downloadable trig puzzle that can be used in small groups to match equivalent expressions. There are also two activity sheets that address applying trigonometric solutions to specific situations. Suggested answers are given, but answers may vary depending on how students interpret the problems."

"Core Math Tools is a downloadable suite of interactive software tools for algebra and functions, geometry and trigonometry, and statistics and probability. The tools are appropriate for use with any high school mathematics curriculum and compatible with the Common Core State Standards for Mathematics in terms of content and mathematical practices. Java required."