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agillogly Group Title

Help!

  • 2 years ago
  • 2 years ago

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  1. goformit100 Group Title
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    ya say

    • 2 years ago
  2. agillogly Group Title
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    • 2 years ago
  3. goformit100 Group Title
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    solve it by cosine rule

    • 2 years ago
  4. agillogly Group Title
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    I don't know how to.

    • 2 years ago
  5. kr7210 Group Title
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    |dw:1339191253421:dw|

    • 2 years ago
  6. kr7210 Group Title
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    use it

    • 2 years ago
  7. agillogly Group Title
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    How? I don't have all the measurements.

    • 2 years ago
  8. alanli123 Group Title
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    You don't need all the measurements

    • 2 years ago
  9. alanli123 Group Title
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    One sec

    • 2 years ago
  10. alanli123 Group Title
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    |dw:1339195102769:dw|

    • 2 years ago
  11. alanli123 Group Title
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    You know what b, c, and angle theta are. all you have to do is plug it in and solve for a

    • 2 years ago
  12. agillogly Group Title
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    Okay

    • 2 years ago
  13. agillogly Group Title
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    I got 130.9 and that isn't and option.

    • 2 years ago
  14. alanli123 Group Title
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    one sec

    • 2 years ago
  15. alanli123 Group Title
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    Could you explain to me how you got your answer?

    • 2 years ago
  16. agillogly Group Title
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    I just tried to plug everything in like you said. 7^2+9^2-2(7)cos(117). I got 136.35. I did something wrong the first time. But its obviously still wrong.

    • 2 years ago
  17. alanli123 Group Title
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    Ok here's where you are wrong. It's 7^2+9^2-2ab cos 117. Can you see where you went wrong? (hint: you're missing b)

    • 2 years ago
  18. alanli123 Group Title
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    You did -2(7), the correct term should be -2(7)(9) because it is -2ab

    • 2 years ago
  19. agillogly Group Title
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    Okay. I thought I forgot a number. Ill try it again.

    • 2 years ago
  20. agillogly Group Title
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    187.20?

    • 2 years ago
  21. alanli123 Group Title
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    Yes!

    • 2 years ago
  22. kr7210 Group Title
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    |dw:1339192083258:dw|

    • 2 years ago
  23. alanli123 Group Title
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    You are correct!

    • 2 years ago
  24. kr7210 Group Title
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    found ur answer?

    • 2 years ago
  25. alanli123 Group Title
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    Medal please lol

    • 2 years ago
  26. agillogly Group Title
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    I picked 187.2 and it said the correct answer is 13.68.

    • 2 years ago
  27. kr7210 Group Title
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    answer is 187.20

    • 2 years ago
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