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anonymous

  • one year ago

What is the height of the building? 180 m 51.96 m 155.88 m 60 m

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  1. anonymous
    • one year ago
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    is there a pic

  2. anonymous
    • one year ago
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    1 Attachment
  3. anonymous
    • one year ago
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    @slade @Marcorie

  4. anonymous
    • one year ago
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    I got 51.96 m

  5. jdoe0001
    • one year ago
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    |dw:1435706847453:dw| recall your SOH CAH TOA -> \(\large tan(\theta)=\cfrac{opposite}{adjacent}\)

  6. anonymous
    • one year ago
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    |dw:1435706202079:dw|

  7. jdoe0001
    • one year ago
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    \(\bf tan(\theta)=\cfrac{opposite}{adjacent}\implies tan(\theta)\cdot adjacent=opposite\)

  8. anonymous
    • one year ago
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    H=90/3√×3√3\[H=\frac{ 90 }{ \sqrt{3}}×\frac{ \sqrt{3} }{ 3 }=30\sqrt{3}\]√=303√

  9. anonymous
    • one year ago
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    dont mind the H=903√×3√3 or the √=303√

  10. jdoe0001
    • one year ago
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    well... is also a 30-60-90 triangle.. thus you could also use the 30-60-90 rule -> http://nanharbison.com/sats/math_images/30_60_90.gif

  11. anonymous
    • one year ago
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    so D?

  12. anonymous
    • one year ago
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    i got B

  13. jdoe0001
    • one year ago
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    |dw:1435707245750:dw|

  14. anonymous
    • one year ago
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    I just did the formula and got 90

  15. anonymous
    • one year ago
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    I think I had the right answer before, did I?

  16. jdoe0001
    • one year ago
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    @CaptainLlama49 what did you get?

  17. anonymous
    • one year ago
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    Scroll up

  18. jdoe0001
    • one year ago
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    90?

  19. anonymous
    • one year ago
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    All the way up, to the beginning.

  20. jdoe0001
    • one year ago
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    51.96?

  21. anonymous
    • one year ago
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    yes :)

  22. anonymous
    • one year ago
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    Was that right?

  23. anonymous
    • one year ago
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    Ik thats what @Marcorie got

  24. jdoe0001
    • one year ago
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    ahermm nope

  25. anonymous
    • one year ago
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    What did you get?

  26. anonymous
    • one year ago
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    no i got 51.96

  27. anonymous
    • one year ago
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    yea i got the same thing @Marcorie

  28. jdoe0001
    • one year ago
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    lemme use the 30-60-90 rule |dw:1435707545721:dw|

  29. anonymous
    • one year ago
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    nope its actually B i know that for a fact

  30. anonymous
    • one year ago
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    http://prntscr.com/4sim9t

  31. anonymous
    • one year ago
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    this person put 60 and got it wrong http://openstudy.com/study#/updates/53bb1625e4b034f6ea702455

  32. jdoe0001
    • one year ago
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    hmm

  33. jdoe0001
    • one year ago
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    hold the mayo

  34. jdoe0001
    • one year ago
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    anyhow.. I see the mistake the 30 degree angle makes the shorter side, thus "x"

  35. jdoe0001
    • one year ago
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    |dw:1435708058181:dw|

  36. jdoe0001
    • one year ago
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    \(\bf x\sqrt{3}=90\implies x=\cfrac{90}{\sqrt{3}}\)

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