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matlee

  • one year ago

I have a question about angles, on how wide they can be

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  1. matlee
    • one year ago
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    |dw:1433115942278:dw|

  2. matlee
    • one year ago
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    Hi triical i need help again on angles

  3. triciaal
    • one year ago
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    a straight line is an angle of 180 degrees

  4. matlee
    • one year ago
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    is there a way to know how wide a angle is?

  5. matlee
    • one year ago
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    If the box were 5 feet in length would i be able to tell how wide a angle would be directly in the middle?

  6. matlee
    • one year ago
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    |dw:1433116178824:dw|

  7. matlee
    • one year ago
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    |dw:1433116309613:dw|

  8. triciaal
    • one year ago
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    not sure if you are combining 2 examples or is the wall 5 ft from the weapon?

  9. triciaal
    • one year ago
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    |dw:1433120061769:dw|

  10. matlee
    • one year ago
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    No the weapon is on the wall which is 5ft wide and only sprays 40 degree angle , and yes i am combining two examples

  11. matlee
    • one year ago
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    hmm no its more like i will draw your same example

  12. matlee
    • one year ago
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    |dw:1433116606778:dw|

  13. jim_thompson5910
    • one year ago
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    is it a top down, or birds eye view? |dw:1433116747233:dw| the circle is the top of the person's head

  14. matlee
    • one year ago
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    Birds eye i would say , its really a sprinkler i just want to check if i put this on a 40 degree angle to rotate would it hit the walls on each side or miss them?

  15. triciaal
    • one year ago
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    |dw:1433120181309:dw|

  16. matlee
    • one year ago
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    omg

  17. jim_thompson5910
    • one year ago
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    I think it depends on how far the water can shoot out

  18. matlee
    • one year ago
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    Thanks for your help, i have many questions . Uhm lets just say its 35 feet long walls , would i be able to calculate that?

  19. jim_thompson5910
    • one year ago
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    do you know how far the water can shoot out? the max distance possible

  20. matlee
    • one year ago
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    my bad is shoots up to 38 feet but i can adjust it to 35 and the walls are 35 feet long

  21. triciaal
    • one year ago
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    sounds like you are going to consider the water pressure next

  22. matlee
    • one year ago
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    Yes lol

  23. jim_thompson5910
    • one year ago
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    you don't really need to use trig or anything like that you just need to make sure that the distance (shown below) is more than 38 feet to keep the wall dry |dw:1433117166966:dw|

  24. jim_thompson5910
    • one year ago
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    any other segment will be longer than 38 feet (assuming the black segment marked above is 38 feet) so if the black segment is say 40 feet, then the other segments are longer than 40 feet

  25. matlee
    • one year ago
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    |dw:1433117235149:dw| This is what it looks like

  26. matlee
    • one year ago
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    The water sprays from the point

  27. jim_thompson5910
    • one year ago
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    I see now

  28. jim_thompson5910
    • one year ago
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    where is that sprinkler point placed in relation to the 5 ft wall? At the halfway point?

  29. matlee
    • one year ago
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    yes, which makes me think it wont hit the walls but i have to make sure

  30. matlee
    • one year ago
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    directly next to the wall maybe 2 inches away

  31. jim_thompson5910
    • one year ago
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    ok against the wall, but where along the wall?

  32. matlee
    • one year ago
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    directly at the 2.5 length

  33. jim_thompson5910
    • one year ago
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    |dw:1433117449091:dw|

  34. jim_thompson5910
    • one year ago
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    oh ok, thx

  35. matlee
    • one year ago
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    here i will draw what i have so far

  36. matlee
    • one year ago
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    oh nvm

  37. matlee
    • one year ago
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    Thanks for the help btw

  38. jim_thompson5910
    • one year ago
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    anyways, since the sprinkler is at the halfway point, we know this |dw:1433117543177:dw|

  39. jim_thompson5910
    • one year ago
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    I got the 34.833 from the fact that (35 ft ) - (2 inches) = (35 ft) - (0.167 ft) = 34.833 ft

  40. matlee
    • one year ago
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    Ok

  41. jim_thompson5910
    • one year ago
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    pull out this triangle |dw:1433117745200:dw|

  42. jim_thompson5910
    • one year ago
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    use the pythagorean theorem to solve for x

  43. matlee
    • one year ago
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    Ok

  44. matlee
    • one year ago
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    34.92=C

  45. matlee
    • one year ago
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    X

  46. jim_thompson5910
    • one year ago
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    good

  47. jim_thompson5910
    • one year ago
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    oh wait I'm not thinking one sec

  48. matlee
    • one year ago
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    yes cus 40 degrees

  49. jim_thompson5910
    • one year ago
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    I'm going to assume that the sprinkler is aimed in a way such that these angles (marked below) are congruent. Put another way, the sprinkler is watering each half equally |dw:1433118000730:dw|

  50. matlee
    • one year ago
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    yes

  51. jim_thompson5910
    • one year ago
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    if that is the case, then each of those angles are 70 degrees since 70+70+40 = 180

  52. jim_thompson5910
    • one year ago
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    |dw:1433118055561:dw|

  53. matlee
    • one year ago
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    i just noticed theres no sprinklers that start in the middle and go left and right grr

  54. jim_thompson5910
    • one year ago
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    the water sprays at most 38 feet so the longest this segment (marked below) can get is 38 ft |dw:1433118100606:dw|

  55. matlee
    • one year ago
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    Yes

  56. jim_thompson5910
    • one year ago
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    The question is: is the marked segment below 2.5 feet? |dw:1433118160441:dw|

  57. jim_thompson5910
    • one year ago
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    IF the last segment marked was 2.5 ft, then a triangle would form |dw:1433118194993:dw| and this triangle would have its segment lying right against the wall

  58. matlee
    • one year ago
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    No its just if the water will ever hit the walls is my question

  59. jim_thompson5910
    • one year ago
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    I know. What I'm trying to say is that IF this horizontal segment of the triangle is 2.5 ft, then the triangle will lie along the right wall. Which means the water will hit the wall IF the horizontal segment is longer than 2.5 ft, then the water will hit the wall but will come much closer to the sprinkler

  60. matlee
    • one year ago
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    I am still confused, how would you be able to check, i know if bullets went straight forever theyd eventually hit a wall but the water only goes 38 feet. and dies out afterwards that length

  61. jim_thompson5910
    • one year ago
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    One moment. I'll try to paint a better picture

  62. matlee
    • one year ago
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    Sorry im not very comprehensive lols

  63. matlee
    • one year ago
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    and if i spelled comprehension in the wrong way i meant my comprehensions skills are below 0

  64. matlee
    • one year ago
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    hello?

  65. matlee
    • one year ago
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    ;9

  66. jim_thompson5910
    • one year ago
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    I'm making a pic at the moment. one sec

  67. matlee
    • one year ago
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    Ok

  68. jim_thompson5910
    • one year ago
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    I'm making a geogebra applet so you can see an accurate diagram

  69. matlee
    • one year ago
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    Thanks so much! What is an applet?

  70. jim_thompson5910
    • one year ago
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    well ideally there is some level of interactivity, but I don't think that's needed here. Anyways, that would take longer than normal and I'm taking a long time as it is. So I'll just post a pic of what I have so far (see attached)

  71. matlee
    • one year ago
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    holy crap so it hits the wall nearly automatically

  72. jim_thompson5910
    • one year ago
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    anyways, in that diagram, the distance from S to P is 2.5 ft using a bit of trig, we can figure out that the distance from S to K is roughly 7.31 ft but the water can shoot as far as 38 ft, so the water will definitely hit the left & right walls

  73. jim_thompson5910
    • one year ago
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    yes it might be better to have the sprinkler set up halfway along the 35 ft wall then again, nvm it will still hit a wall since that 5 ft gap isn't that big

  74. matlee
    • one year ago
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    lols yeah ! Well i am very grateful for your help! Thank you! And Thanks again!

  75. matlee
    • one year ago
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    are you able to check at what degrees it doesnt hit the walls?

  76. jim_thompson5910
    • one year ago
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    you're welcome, I suggest you check out geogebra. It's not as great as something like autocad, but it allows for (somewhat) quick scale drawings to figure out the distances/lengths easily. And the program is free, so another bonus.

  77. matlee
    • one year ago
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    Ok i sure will, thatll be helpful for this project, autocad is somewhat like autodesk inventor?

  78. jim_thompson5910
    • one year ago
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    I've never heard of that other program, but perhaps? Autocad is mainly for use if you want to build blueprints or schematic drawings of objects (often in 3D).

  79. matlee
    • one year ago
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    Oh ok, i saw auto cad in my engineering class just never used it. Well i appreaciate your help, i have many other questions but i think i should close this one

  80. jim_thompson5910
    • one year ago
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    np

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