Putting the Law of Cosines and the Law of Sines to Use

Use the Law of Cosines and the Law of Sines to solve problems using the sums of vectors. Pupils work on several different types of real-world problems that can be modeled using triangles with three known measurements. In the process, scholars decide which method will work best to solve the problems. 

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CCSS: Designed
Instructional Ideas

  • Have the class create a table on what kinds of triangles can be solved using the two different laws
  • Instruct students to draw diagrams that represent the scenario in the problems
Classroom Considerations

  • The class should be familiar with the Law of Cosines and the Law of Sines
  • The lesson is the 11th in a series of 16
Pros

  • Includes answers to the problems and questions in the examples
  • Provides suggestions for English learners
Cons

  • None
Common Core