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Law of Cosines Herons Formula Determining b/w Sine & Cosine December 12 th, 2013 December 13 th, 2013.

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Presentation on theme: "Law of Cosines Herons Formula Determining b/w Sine & Cosine December 12 th, 2013 December 13 th, 2013."— Presentation transcript:

1 Law of Cosines Herons Formula Determining b/w Sine & Cosine December 12 th, 2013 December 13 th, 2013

2 Heron’s Formula Click the triangle!

3 Heron’s Formula

4 Example- Find the area

5 Law of Cosines/Cosine Rule

6 Examples

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9 Using Sine & Cosine Rules

10 Example

11 Example- Use Law of Cosines!

12 Laws of Sine/Cosine Packet Review the formulas for Law of Sines/Cosines & when you use them For 1-10 set up the problems using BOTH law of sines/cosines, then determine which you should use to solve Solve (pick which to use first) 2 pts Extra Credit on test for each challenge question you get right

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19 Homework Finish the packet A day Edition 2 Pg. 415 #1-3, 4B Pg. 420 #1 and #3 B day Edition 1 Pg. 340 #1-3, 4B Pg #1 and #3


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