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5.6

5.6. Law of Cosines. What you’ll learn about. Deriving the Law of Cosines Solving Triangles (SAS, SSS) Triangle Area and Heron’s Formula Applications … and why The Law of Cosines is an important extension of the Pythagorean theorem, with many applications. Law of Cosines.

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5.6

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  1. 5.6 Law of Cosines

  2. What you’ll learn about • Deriving the Law of Cosines • Solving Triangles (SAS, SSS) • Triangle Area and Heron’s Formula • Applications … and why The Law of Cosines is an important extension of the Pythagorean theorem, with many applications.

  3. Law of Cosines

  4. Example Solving a Triangle (SAS)

  5. Example Solving a Triangle (SAS)

  6. Example Solving a Triangle (SAS)

  7. Area of a Triangle

  8. Heron’s Formula

  9. Example Using Heron’s Formula Find the area of a triangle with sides 10, 12, 14.

  10. Example Using Heron’s Formula Find the area of a triangle with sides 10, 12, 14.

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