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Claire4christ Group Title

I need help with question. Im gonna download question.

  • one year ago
  • one year ago

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  1. Claire4christ Group Title
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    • one year ago
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  2. Claire4christ Group Title
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    @radar

    • one year ago
  3. Algebraic! Group Title
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    who opens .docx anymore?

    • one year ago
  4. Claire4christ Group Title
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    you can open do docx

    • one year ago
  5. Decart Group Title
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    you need to use trigonometric functions

    • one year ago
  6. Claire4christ Group Title
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    i got cos 50=x/90 right

    • one year ago
  7. Claire4christ Group Title
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    so i got 57.9

    • one year ago
  8. Claire4christ Group Title
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    The cosine of a 50° angle is 57.9 right

    • one year ago
  9. Decart Group Title
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    which part the first blank is asking which function to use to find the height

    • one year ago
  10. Claire4christ Group Title
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    part 1 i think its cosine

    • one year ago
  11. Decart Group Title
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    if yo are using cos(50)=x/90

    • one year ago
  12. Claire4christ Group Title
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    yes that's what i did

    • one year ago
  13. Claire4christ Group Title
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    and i got 57.9

    • one year ago
  14. Decart Group Title
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    then the next part is asking for the reverse how do you find the cosine function with the two sides

    • one year ago
  15. Decart Group Title
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    57.8

    • one year ago
  16. Decart Group Title
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    then input the cosine of 50 in your calculator for the next blank

    • one year ago
  17. Claire4christ Group Title
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    its asking this this represents the value created when length _____ is divided by ______ feet.

    • one year ago
  18. Decart Group Title
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    the angle is the value when you divide the sides accordingly

    • one year ago
  19. radar Group Title
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    Cos 50 degrees is 0.6428

    • one year ago
  20. Claire4christ Group Title
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    The cosine of a 50° angle is 57.9 is this right for the second part

    • one year ago
  21. Decart Group Title
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    all the trig functions are is a relationship between the lengths of sides if you divide two known sides and take that data it represents and angle.

    • one year ago
  22. Decart Group Title
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    so like radar has said the cosine of 50 is .6428 so the sides divided are also .6428

    • one year ago
  23. Decart Group Title
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    57.8 is the height of the tower because you multiplied the hypotenuse by the cosine to find x

    • one year ago
  24. Claire4christ Group Title
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    so it will be .6428x.6428

    • one year ago
  25. radar Group Title
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    Cos is the adjacent side divided by the hypotenusel.

    • one year ago
  26. Decart Group Title
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    what happens if you divide the side x by the side of 90

    • one year ago
  27. Claire4christ Group Title
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    adjacemt side is x right and hypotenusel is 90

    • one year ago
  28. Decart Group Title
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    so 57.8 divided by 90

    • one year ago
  29. Claire4christ Group Title
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    that's what i got

    • one year ago
  30. radar Group Title
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    \[\cos 50^{0}=x/90 ft\]

    • one year ago
  31. Decart Group Title
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    you get .6422

    • one year ago
  32. Claire4christ Group Title
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    i got 57.9

    • one year ago
  33. Decart Group Title
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    roughly the same as the cosine for 50 degrees

    • one year ago
  34. radar Group Title
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    \[x=.6428 \times90\]

    • one year ago
  35. Decart Group Title
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    |dw:1349577896978:dw|

    • one year ago
  36. Decart Group Title
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    that is what we have so far

    • one year ago
  37. Claire4christ Group Title
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    so it would be 57.9

    • one year ago
  38. Claire4christ Group Title
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    so x side is 57.9

    • one year ago
  39. radar Group Title
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    Yes

    • one year ago
  40. radar Group Title
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    when angle was 50 degrees

    • one year ago
  41. Decart Group Title
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    \[\cos(50^{0})=\frac{ adjacent }{ hypotenuse}\]

    • one year ago
  42. Claire4christ Group Title
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    The cosine of a 50° angle is .6422 right

    • one year ago
  43. Decart Group Title
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    the first question only wanted to know that you would use the cosine function to find x

    • one year ago
  44. Decart Group Title
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    the next blank wants you to input the cosine of 50 which you have .6422

    • one year ago
  45. Claire4christ Group Title
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    its .6428

    • one year ago
  46. Decart Group Title
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    yes if you type in cos50 in your calculator that is what you get

    • one year ago
  47. Claire4christ Group Title
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    this represents the value created when length ____ is divided by ____ feet.

    • one year ago
  48. Claire4christ Group Title
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    so what about this one

    • one year ago
  49. Decart Group Title
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    if you look at the funtion you know that it is x divided by the 90 feet if you divide the value you got for x by 90 it is about the same as cos 50

    • one year ago
  50. Claire4christ Group Title
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    when length is 50 is divided by x feet right

    • one year ago
  51. Decart Group Title
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    no 50 is the angle you want the height of the tower divided by the lenght of the decline which is 90

    • one year ago
  52. Claire4christ Group Title
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    when length is 90 divided by x feet

    • one year ago
  53. Decart Group Title
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    |dw:1349578522617:dw|

    • one year ago
  54. Claire4christ Group Title
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    right

    • one year ago
  55. Decart Group Title
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    see how it is lenght x divided by 90 feet

    • one year ago
  56. Claire4christ Group Title
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    ok i see now x/90

    • one year ago
  57. Decart Group Title
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    that is a balanced equation if you divide that you get the same value as you did when you input cos of 50 into your calculator

    • one year ago
  58. Claire4christ Group Title
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    ok

    • one year ago
  59. Claire4christ Group Title
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    If the angle of declination changed to 60°, the cosine would be 0.5; now the length of x would be ________ feet.

    • one year ago
  60. Decart Group Title
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    use the same equation with the cos of 60 instead

    • one year ago
  61. Claire4christ Group Title
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    so its gonna be cos(60)=x/90

    • one year ago
  62. Decart Group Title
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    \[\cos(60^{0})=\frac{ x }{ 90ft }\]

    • one year ago
  63. Decart Group Title
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    so now you need to solve for x

    • one year ago
  64. Claire4christ Group Title
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    so it would be 45

    • one year ago
  65. Decart Group Title
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    yes one more blank left

    • one year ago
  66. Decart Group Title
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    there is two ways to solve for this but you are suppose to use a trig function

    • one year ago
  67. Decart Group Title
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    there are srry

    • one year ago
  68. Claire4christ Group Title
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    0.5

    • one year ago
  69. Claire4christ Group Title
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    If the angle of declination changed to 60°, the angle of inclination would be _____ degrees.

    • one year ago
  70. Decart Group Title
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    no it wants to know the angle of inclination which is the angle from the bottom

    • one year ago
  71. Decart Group Title
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    |dw:1349579030126:dw|

    • one year ago
  72. radar Group Title
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    |dw:1349579070499:dw|

    • one year ago
  73. Decart Group Title
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    the angel theta is unknown do you know which trig function to use to solve it

    • one year ago
  74. Claire4christ Group Title
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    not sure

    • one year ago
  75. Claire4christ Group Title
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    so theta is 60 degrees right

    • one year ago
  76. Decart Group Title
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    if you look at the trig functions there are sin=opposite / hypotenuse cos which we covered and tangent = opposite / adjacent

    • one year ago
  77. Claire4christ Group Title
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    ok

    • one year ago
  78. Decart Group Title
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    so you want to use the sine function

    • one year ago
  79. radar Group Title
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    From reading the problem, I believe you could solve simply from the fact you are working with a right triangle, and the sum of the two acute angles equals 90 degrees.

    • one year ago
  80. Decart Group Title
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    |dw:1349579230668:dw|

    • one year ago
  81. Claire4christ Group Title
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    so apposite side is 45 right

    • one year ago
  82. Decart Group Title
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    yes

    • one year ago
  83. Claire4christ Group Title
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    so we trying to find the bottom right

    • one year ago
  84. Decart Group Title
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    yes the bottom angle

    • one year ago
  85. Decart Group Title
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    on your calculator you push the 2nd button then 45/90

    • one year ago
  86. Claire4christ Group Title
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    i got 0.5

    • one year ago
  87. Decart Group Title
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    you need the inverse sine of .5 which is 2nd sin .5

    • one year ago
  88. Decart Group Title
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    are you using a ti calculator

    • one year ago
  89. Claire4christ Group Title
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    no my iphone

    • one year ago
  90. Decart Group Title
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    you need to look for \[\sin ^{-1}\]

    • one year ago
  91. Claire4christ Group Title
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    ok

    • one year ago
  92. Claire4christ Group Title
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    you press sin ^-1

    • one year ago
  93. Claire4christ Group Title
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    and than 45/90

    • one year ago
  94. Decart Group Title
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    is that a button

    • one year ago
  95. Claire4christ Group Title
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    yes its sin^(-1)

    • one year ago
  96. Decart Group Title
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    yes what do you get when you put that in

    • one year ago
  97. Claire4christ Group Title
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    0.5

    • one year ago
  98. Decart Group Title
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    .5 is what you get when you do the division without the sine function I am not sure what your calculator is doing

    • one year ago
  99. Decart Group Title
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    when you get the true inverse sine you will get 30 degrees

    • one year ago
  100. Claire4christ Group Title
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    i got 30

    • one year ago
  101. Decart Group Title
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    that is correct know do you notice that the 30 you got and the 60 degree other angle add up to 90 and the right angle is also 90 every triangle has 180 degrees in it so you could have just found the missing amount from 180

    • one year ago
  102. Decart Group Title
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    http://www.youtube.com/watch?v=T8B8Tcz8kog&feature=related

    • one year ago
  103. Decart Group Title
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    that is a link to a tutorial that might be able to help

    • one year ago
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is replying to Can someone tell me what button the professor is hitting...

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