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# Law of Cosines Part 3

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### Law of Cosines Part 3

1. 1. Go to Chat on the Main page.<br />Please pause for discussion.<br />Q<br />Y<br />P<br />6 cm<br />4 cm<br />4 cm<br />6 cm<br />X<br />Z<br />8 cm<br />40˚<br />R<br />
2. 2. What about non-right triangles?<br />Y<br />6 cm<br />4 cm<br />X<br />Z<br />8 cm<br />
3. 3. What about non-right triangles?<br />Q<br />P<br />4 cm<br />6 cm<br />40˚<br />R<br />
4. 4. Law of Cosines<br />
5. 5. Law of Cosines<br />C<br />b<br />a<br />A<br />B<br />c<br />
6. 6. Law of Cosines<br />vertex<br />C<br />b<br />a<br />A<br />B<br />c<br />
7. 7. Law of Cosines<br />vertex<br />C<br />b<br />a<br />A<br />B<br />c<br />
8. 8. Law of Cosines<br />vertex<br />C<br />b<br />a<br />A<br />B<br />c<br />
9. 9. Law of Cosines<br />vertex<br />C<br />b<br />a<br />A<br />B<br />c<br />
10. 10. Law of Cosines<br />C<br />b<br />a<br />altitude<br />A<br />B<br />c<br />
11. 11. Law of Cosines<br />C<br />b<br />a<br />k<br />A<br />B<br />c<br />
12. 12. Law of Cosines<br />C<br />b<br />a<br />k<br />A<br />B<br />c<br />
13. 13. Law of Cosines<br />C<br />b<br />a<br />k<br />A<br />B<br />c<br />
14. 14. Law of Cosines<br />C<br />b<br />a<br />k<br />A<br />B<br />c<br />x<br />
15. 15. Law of Cosines<br />C<br />b<br />a<br />k<br />A<br />B<br />c<br />c - x<br />x<br />
16. 16. Law of Cosines<br />(c – x) + x = c<br />C<br />b<br />a<br />k<br />c - x<br />x<br />A<br />B<br />c<br />
17. 17. Law of Cosines<br />(c – x) + x = c<br />c – x + x = c<br />C<br />b<br />a<br />k<br />c - x<br />x<br />A<br />B<br />c<br />
18. 18. Law of Cosines<br />(c – x) + x = c<br />c – x + x = c<br />c = c<br />C<br />b<br />a<br />k<br />c - x<br />x<br />A<br />B<br />c<br />
19. 19. Law of Cosines<br />C<br />b<br />a<br />k<br />c - x<br />x<br />A<br />B<br />c<br />
20. 20. Stop at Problem 8.<br />Begin the worksheet<br />C<br />b<br />a<br />k<br />c - x<br />x<br />A<br />B<br />c<br />