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cutiecomittee123

  • one year ago

A 50 foot tree asts its shadow 75 feet long. How can you find sine for the angle of elevation determined by the sun and the top of the tree?

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  1. anonymous
    • one year ago
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    what grade u in ??

  2. Here_to_Help15
    • one year ago
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    @*ImaBeMe* I find that irrelevant,if your not going to help please hit that log out option and annoy someone else.

  3. jim_thompson5910
    • one year ago
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    hint: |dw:1441844647460:dw| solve for \(\Large \theta\)

  4. cutiecomittee123
    • one year ago
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    I agree please leave if you arent willling to help I am trying to keep my schedule organized and I actually am in need of help. this is not a dating website.

  5. Here_to_Help15
    • one year ago
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    @ganeshie8 @jim_thompson5910

  6. jim_thompson5910
    • one year ago
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    another hint: |dw:1441844715344:dw|

  7. anonymous
    • one year ago
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    ok i just asked dang

  8. cutiecomittee123
    • one year ago
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    this is precalculus incase youre wondering.

  9. jim_thompson5910
    • one year ago
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    if you aren't familiar with the trig ratios, this chart may help http://passyworldofmathematics.com/Images/pwmImagesSix/TrigRatiosSix550x389JPG.jpg

  10. cutiecomittee123
    • one year ago
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    alright so sinfeta=50/x

  11. cutiecomittee123
    • one year ago
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    then take the inverse right?

  12. cutiecomittee123
    • one year ago
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    @jim_thompson5910

  13. jim_thompson5910
    • one year ago
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    theta = \(\Large \theta\) it's a greek letter

  14. cutiecomittee123
    • one year ago
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    Oh gotcha

  15. jim_thompson5910
    • one year ago
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    which two sides are known to us? (pick between opposite, adjacent, hypotenuse)

  16. cutiecomittee123
    • one year ago
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    we know opposite and adjacent. which are opposite=50 and adjacent=75

  17. jim_thompson5910
    • one year ago
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    yep, which trig function uses opposite and adjacent?

  18. cutiecomittee123
    • one year ago
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    but it is asking to find sine

  19. jim_thompson5910
    • one year ago
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    oh I see, I was thinking they just wanted theta, nvm

  20. jim_thompson5910
    • one year ago
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    ok so you'll need the hypotenuse first because sin(theta) = opp/hyp

  21. Here_to_Help15
    • one year ago
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    Wait up i remember this in Geometry, are you sure it isnt Geometry

  22. jim_thompson5910
    • one year ago
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    so use the pythagorean theorem to find x |dw:1441845085421:dw| a^2 + b^2 = c^2 50^2 + 75^2 = x^2 x = ???

  23. cutiecomittee123
    • one year ago
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    you do learn this in geometry, if you want to try and give it a shot, i wont stop you lol

  24. cutiecomittee123
    • one year ago
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    c=90.14

  25. cutiecomittee123
    • one year ago
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    sintheta=50/90.14

  26. jim_thompson5910
    • one year ago
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    you have one more step to go

  27. cutiecomittee123
    • one year ago
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    uhh that is where i need help

  28. cutiecomittee123
    • one year ago
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    dont you just take the inverse

  29. jim_thompson5910
    • one year ago
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    use a calculator to compute 50/90.14

  30. cutiecomittee123
    • one year ago
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    okay i got .5546

  31. jim_thompson5910
    • one year ago
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    I'm getting 50/90.14 = 0.55469270024407 which rounds to 0.5547

  32. cutiecomittee123
    • one year ago
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    yes!

  33. cutiecomittee123
    • one year ago
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    and that is what the angle sin is equal to right?

  34. jim_thompson5910
    • one year ago
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    that decimal value is equal to \(\Large \sin(\theta)\), yes

  35. cutiecomittee123
    • one year ago
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    okay cool, and that is it right?

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