Law of Sines and Cosines Worksheet (pdf)

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Objective

Students will practice deciding when to apply the law of cosines vs the law of sines to calculate the side length of a triangle and to calculate the measure of an angle. The second part of the sheet focuses on problems that require using the formulas more than once (law of cosines to get side, then law of sides to get angle etc..) (more here)

Example Questions

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Visual Aids

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Other Details

This is a 5 part worksheet:

Part I Model Problems
Part II Determining Which Formula to Use
Part III Mixed Problems on Law of Sines and Law of Cosines
Part IV Challenge Questions
Part V Answer Key

Resources

Video Tutorial (You Tube Style) on the law of cosines and sines
Law of Cosines
Law of Sines
Pictures of Law of Sines and Cosines