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ze4life

  • 3 years ago

find the value of x

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  1. Brittni0605
    • 3 years ago
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    Do you know law of sines?

  2. ze4life
    • 3 years ago
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    i couldn't do it on this

  3. Brittni0605
    • 3 years ago
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    yes, you can to find the angle x.

  4. Brittni0605
    • 3 years ago
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    |dw:1355438129894:dw|

  5. ze4life
    • 3 years ago
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    x=sin-1(.0087679 then what do i do

  6. Brittni0605
    • 3 years ago
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    Umm, that decimal is incorrect.

  7. Brittni0605
    • 3 years ago
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    |dw:1355438776265:dw|

  8. ScottB05
    • 3 years ago
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    Guys you cant use the law of sines on a triangle that's not 90 degrees angle, right????

  9. ScottB05
    • 3 years ago
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    Looks to me like\[c^{2} = a^{2} + b^{2} - 2bc CosA\]

  10. ScottB05
    • 3 years ago
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    Correct me if I'm wrong; please - Is that triangle a right angle??

  11. ze4life
    • 3 years ago
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    i have no clue what do u think brittini

  12. ze4life
    • 3 years ago
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    nd no its not a right angle

  13. Brittni0605
    • 3 years ago
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    Law of sines is not only for right triangles.

  14. Brittni0605
    • 3 years ago
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    You cant use law of cosines, and I think if you were to try @ScottB05 's setup is incorrect.

  15. Brittni0605
    • 3 years ago
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    Ok, you still cant use the law of cosines.

  16. ze4life
    • 3 years ago
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    but how do i start in this problem

  17. Brittni0605
    • 3 years ago
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    I would say since the angles in a triangle must add to 180 degrees. Find your missing angle.

  18. ScottB05
    • 3 years ago
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    |dw:1355439236917:dw| Again - Please tell me if I'm going about this the wrong way?

  19. ScottB05
    • 3 years ago
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    Oh.... Right ignore me completely you made a mistake apparently - I'm so stupid sometimes -.-

  20. ze4life
    • 3 years ago
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    im confused

  21. Brittni0605
    • 3 years ago
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    I still disagree with @ScottB05

  22. ScottB05
    • 3 years ago
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    With good reason, I said I'm wrong already xD

  23. Brittni0605
    • 3 years ago
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    Oh, okay. :p

  24. ze4life
    • 3 years ago
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    now u think its solved by the law of cosines

  25. Brittni0605
    • 3 years ago
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    No, I think law of sines

  26. ze4life
    • 3 years ago
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    okay srry but lets start from the beginning because i got messed up with all this srry brittini

  27. Brittni0605
    • 3 years ago
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    No prob.

  28. ze4life
    • 3 years ago
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    thnxs k

  29. Brittni0605
    • 3 years ago
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    |dw:1355440194446:dw|

  30. Brittni0605
    • 3 years ago
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    So, since you know two angles..can you find the third one? Hint: all angles in a triangle add up to 180 degrees

  31. ze4life
    • 3 years ago
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    63 degrees

  32. Brittni0605
    • 3 years ago
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    Great, so now your triangle looks like: |dw:1355440610624:dw|

  33. ze4life
    • 3 years ago
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    :-( can u show me the equation to help solve it

  34. Brittni0605
    • 3 years ago
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    You can use law of cosines.

  35. Brittni0605
    • 3 years ago
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    |dw:1355441141043:dw|

  36. Brittni0605
    • 3 years ago
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    |dw:1355441267636:dw|

  37. ze4life
    • 3 years ago
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    x=1924.7 its so off

  38. ze4life
    • 3 years ago
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    what did u get brittni

  39. ScottB05
    • 3 years ago
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    @Brittni0605 You've done what I've done way up My answer to that equasion was x = 26.9

  40. ze4life
    • 3 years ago
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    i know but i did something wrong

  41. ze4life
    • 3 years ago
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    wait actually u did the wrong problem this is the right one |dw:1355443147072:dw|

  42. ze4life
    • 3 years ago
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    can u try to solve it and see what u get

  43. ScottB05
    • 3 years ago
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    |dw:1355443262333:dw|

  44. ze4life
    • 3 years ago
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    thats much better thnxs i really understood my mistake

  45. ScottB05
    • 3 years ago
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    I may still be wrong but I believe this to be correct. Right until proven wrong =)

  46. ze4life
    • 3 years ago
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    i think its the right answer

  47. Brittni0605
    • 3 years ago
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    oops, sorry guys, I was eating.

  48. ze4life
    • 3 years ago
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    hhh its alright so i think we got the right answer

  49. ScottB05
    • 3 years ago
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    I'd be happier if @Brittni0605 double checked my answer - I was wrong before :)

  50. ze4life
    • 3 years ago
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    what do u think brittni

  51. Brittni0605
    • 3 years ago
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    Hm, this is interesting. The picture must be drawn incorrectly, two angles are equal so it has to be an isosceles triangle.

  52. ze4life
    • 3 years ago
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    its not exactly the same as the assignment but im new in this drawing thing

  53. Brittni0605
    • 3 years ago
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    |dw:1355444759541:dw|

  54. Brittni0605
    • 3 years ago
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    maybe that's better..

  55. ze4life
    • 3 years ago
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    yup way better :p

  56. Brittni0605
    • 3 years ago
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    I agree with thinking x= 9.56

  57. ze4life
    • 3 years ago
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    thnxs people i will close the question and i really appreciate ur help

  58. Brittni0605
    • 3 years ago
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    Yep, np.

  59. ScottB05
    • 3 years ago
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    |dw:1355445651964:dw|Hmm... Wait actually... Haha I just saw something cause u drew it like that

  60. Brittni0605
    • 3 years ago
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    Hmm..

  61. Brittni0605
    • 3 years ago
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    Umm, cosine would be adjacent over hypotenuse, not hypotenuse over adjacent.

  62. ScottB05
    • 3 years ago
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    |dw:1355446061993:dw|Of course :L

  63. Brittni0605
    • 3 years ago
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    Hmm, and for the original triangle..xsin54 = 8sin63, x= 8.81

  64. ScottB05
    • 3 years ago
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    So looks like we found a solution, x = 8.81; after about 2 hours? :)

  65. Brittni0605
    • 3 years ago
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    Lol, phew, I feel so dumb.

  66. ze4life
    • 3 years ago
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    hhh really its hilarious so THE ANSWER IS 8.81 for sure :p

  67. Brittni0605
    • 3 years ago
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    Yes, I agree. Sigh.

  68. ScottB05
    • 3 years ago
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    Well in Scotland it's 1.10 am; I can sleep happy knowing it's solved! :)

  69. Brittni0605
    • 3 years ago
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    Ohh, wow. Well goodnight-ish then..lol.

  70. ScottB05
    • 3 years ago
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    Haha, cheers, gn ;) Maybe I can blame my stupic mistakes on the time? :D

  71. Brittni0605
    • 3 years ago
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    Lml..we both made silly mistakes, just bc we are human.

  72. ScottB05
    • 3 years ago
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    You hope I'm human.... :')

  73. Brittni0605
    • 3 years ago
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    ..oh no, im scared..I do hope you're human..lol.

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