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anonymous

  • one year ago

Scarlett is trying to find the height of a dam. She stands 90 meters away from the dam and records the angle of elevation to the top of the dam to be 26º. Scarlett's height is 1.65 meters, so the height of the dam is

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  1. anonymous
    • one year ago
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    help please

  2. anonymous
    • one year ago
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    |dw:1439257182092:dw|

  3. anonymous
    • one year ago
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    this is why tangent was invented btw you have \[\frac{x}{90}=\tan(26)\] so \[x=90\times \tan(26)\]

  4. anonymous
    • one year ago
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    use a calculator, then add \(1.65\)

  5. anonymous
    • one year ago
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    I still don't understand

  6. anonymous
    • one year ago
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    tangent is "opposite over adjacent" right?

  7. anonymous
    • one year ago
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    you are told the "adjacent' it is 90m you are looking for the "opposite" the height

  8. anonymous
    • one year ago
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    multiply 90*26

  9. anonymous
    • one year ago
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    no dear not by 26, but rather by the tangent of 26

  10. anonymous
    • one year ago
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    \[x=90\times \tan(26)\] you need a calculator for this

  11. anonymous
    • one year ago
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    43.8

  12. anonymous
    • one year ago
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    i get \(43.9\) rounded then don't forget to add her height

  13. anonymous
    • one year ago
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    http://www.wolframalpha.com/input/?i=90tan%2826%29

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