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lsugano Group Title

i want to find the area of a triangle with the given angles A=32˚ C= 77˚ a=71cm. I got the answer about 48.5sqcm but the answer says 170sqcm..How is this possible? click attached.http://bamboodock.wacom.com/doodler/0cb3063d-8c0b-4902-82c1-055993bc5aba

  • 2 years ago
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  1. godorovg Group Title
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    you on?

    • 2 years ago
  2. lsugano Group Title
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    yes i am! my computer froze

    • 2 years ago
  3. godorovg Group Title
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    okay no biggie

    • 2 years ago
  4. godorovg Group Title
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    let me ask some questions here. First when you did the work did you check the signs like + - because the could cause a problem also in the first part explain this a little I am just trying to understand

    • 2 years ago
  5. lsugano Group Title
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    um i think i am doing it right.

    • 2 years ago
  6. godorovg Group Title
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    okay than where did 180 come from?

    • 2 years ago
  7. godorovg Group Title
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    I did to know the whole problem not just answers

    • 2 years ago
  8. lsugano Group Title
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    180 is the total of the 3 angles of the traignle

    • 2 years ago
  9. lsugano Group Title
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    since i know A=32 and C=77 B= 71 from 180-32-77

    • 2 years ago
  10. godorovg Group Title
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    did you plug for for these?

    • 2 years ago
  11. godorovg Group Title
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    did you a and put in it for a

    • 2 years ago
  12. lsugano Group Title
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    the formula to find an area of a triangle with 2 angles and one side given is area= a^2sinBsinC / 2sinA

    • 2 years ago
  13. lsugano Group Title
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    so i did like this

    • 2 years ago
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  14. lsugano Group Title
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    am i wrong or is this book stupid...? lol

    • 2 years ago
  15. alexwee123 Group Title
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    im just curious is this geometry or trig? o.0

    • 2 years ago
  16. lsugano Group Title
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    its in trig.

    • 2 years ago
  17. alexwee123 Group Title
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    oh ok then maybe you can check this site out http://www.regentsprep.org/Regents/math/algtrig/ATT13/areatriglesson.htm it gives a better formula and solution :D

    • 2 years ago
  18. cfraser007 Group Title
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    ok ok...i think u should try to change your calculator settings to degrees and not radians!

    • 2 years ago
  19. lsugano Group Title
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    its in degrees...i already tried doing that...

    • 2 years ago
  20. godorovg Group Title
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    what is the answer?

    • 2 years ago
  21. cfraser007 Group Title
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    wait a seocnd...i'll put my numbers up...i got approximately 170.3...check for yourself...

    • 2 years ago
  22. godorovg Group Title
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    same here..

    • 2 years ago
  23. lsugano Group Title
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    i got 61.63 but the book says 170...

    • 2 years ago
  24. godorovg Group Title
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    I think the second part is wrong somehow

    • 2 years ago
  25. cfraser007 Group Title
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    |dw:1344138495546:dw|

    • 2 years ago
  26. godorovg Group Title
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    yep that is what is wrong forgot to put the a b c in the problem

    • 2 years ago
  27. godorovg Group Title
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    in other words sub in

    • 2 years ago
  28. lsugano Group Title
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    wait how did you get 180.57.?? i cant got 188.36

    • 2 years ago
  29. cfraser007 Group Title
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    ok...lets take even more baby steps! what did u get for sin71 x sin77?

    • 2 years ago
  30. godorovg Group Title
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    cfraser should I go and let you help or stay??

    • 2 years ago
  31. cfraser007 Group Title
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    i can help...i guess...!

    • 2 years ago
  32. lsugano Group Title
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    sin77= 0.9744 sin71= 0.9455

    • 2 years ago
  33. lsugano Group Title
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    im so sorry ><

    • 2 years ago
  34. cfraser007 Group Title
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    y?

    • 2 years ago
  35. lsugano Group Title
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    for making you guys have a hard time....

    • 2 years ago
  36. godorovg Group Title
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    nah don't worry about it

    • 2 years ago
  37. lsugano Group Title
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    thank you! so does this look okay so far?

    • 2 years ago
  38. cfraser007 Group Title
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    haha! no problem...most of us are here to help and make ourselves feel better anyways! lol...and actually 186 is right! (i mistyped!)

    • 2 years ago
  39. cfraser007 Group Title
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    what did u get for 2sin32?

    • 2 years ago
  40. godorovg Group Title
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    ha ha typo wow get love trig on a computer ha ha

    • 2 years ago
  41. lsugano Group Title
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    2sin32 = 1.0598

    • 2 years ago
  42. cfraser007 Group Title
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    okay...so, divide those two numbers!

    • 2 years ago
  43. cfraser007 Group Title
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    dont round them up like me! the more digits...the better!!

    • 2 years ago
  44. lsugano Group Title
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    i got 177.39

    • 2 years ago
  45. godorovg Group Title
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    yes

    • 2 years ago
  46. cfraser007 Group Title
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    hmm...so...thats much closer to 170! lol

    • 2 years ago
  47. lsugano Group Title
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    isnt it lose to 180....?lol

    • 2 years ago
  48. godorovg Group Title
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    yeah, but who is keeping track lol

    • 2 years ago
  49. cfraser007 Group Title
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    better than 48.5! :)

    • 2 years ago
  50. godorovg Group Title
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    lol

    • 2 years ago
  51. lsugano Group Title
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    HEY i got it

    • 2 years ago
  52. cfraser007 Group Title
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    sweet! great!!

    • 2 years ago
  53. godorovg Group Title
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    GREAT JOB!!

    • 2 years ago
  54. lsugano Group Title
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    thanks a lottttt!!!!

    • 2 years ago
  55. godorovg Group Title
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    glad to help :)

    • 2 years ago
  56. cfraser007 Group Title
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    same feeling here!

    • 2 years ago
  57. godorovg Group Title
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    cfraser007 nice job!!

    • 2 years ago
  58. cfraser007 Group Title
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    thanks :D!

    • 2 years ago
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