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6.2 Laws of Cosines

6.2 Laws of Cosines. Law of Cosines. Find all the parts of a triangle. Using the Law of Cosines find b. Find A. Find A. Find C. Angle C can not be 130.9 degrees, Why?. Area of a Triangle with using only sides: Heron Area Formula.

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6.2 Laws of Cosines

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  1. 6.2 Laws of Cosines

  2. Law of Cosines

  3. Find all the parts of a triangle

  4. Using the Law of Cosines find b

  5. Find A

  6. Find A

  7. Find C Angle C can not be 130.9 degrees, Why?

  8. Area of a Triangle with using only sides: Heron Area Formula • Hero (or Heron) of Alexandria (Greek: Ἥρων ὁ Ἀλεξανδρεύς) (c. 10–70 AD) was an ancient Greek mathematician and engineer who was active in his native city of Alexandria, Roman Egypt. He is considered the greatest experimenter of antiquity and his work is representative of the Hellenistic scientific tradition. • Hero published a well recognized description of a steam-powered device called an aeolipile (hence sometimes called a "Hero engine"). Among his most famous inventions was a windwheel, constituting the earliest instance of wind harnessing on land. http://en.wikipedia.org/wiki/Hero_of_Alexandria

  9. Heron Area Formula

  10. Find the Area Area of ABC

  11. Find the Area Area of ABC

  12. Find the Area Area of ABC

  13. Homework

  14. Homework Page 423 – # 4, 10, 16, 22, 28, 34, 39, 48

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