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rebecca1233

in a 40 ^0 - 45^0 - 90^0 right triangle, the hyptoenuse is 5m. how long are the legs? please help

  • one year ago
  • one year ago

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  1. rebecca1233
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    oops first one is 45^0 too

    • one year ago
  2. rebecca1233
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    so 45^0 - 45^0 - 90^0

    • one year ago
  3. jim_thompson5910
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    Hint: |dw:1358468818520:dw|

    • one year ago
  4. baziham
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    |dw:1358468848265:dw|

    • one year ago
  5. rebecca1233
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    so what do i do? can u help me get the answer?

    • one year ago
  6. jim_thompson5910
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    The figure allows us to say \[\Large x\sqrt{2} = 5\]

    • one year ago
  7. jim_thompson5910
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    solve for x to get your answer

    • one year ago
  8. rebecca1233
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    so i just 2 *5?

    • one year ago
  9. jim_thompson5910
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    no

    • one year ago
  10. jim_thompson5910
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    You have to divide both sides by \(\Large \sqrt{2}\), then rationalize the denominator (if the book requires you to do it)

    • one year ago
  11. rebecca1233
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    so 5 divide by 2?

    • one year ago
  12. jim_thompson5910
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    square root of 2

    • one year ago
  13. rebecca1233
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    so 3

    • one year ago
  14. jim_thompson5910
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    no, it's not 3

    • one year ago
  15. rebecca1233
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    idk i suck at square rooting stuff

    • one year ago
  16. jim_thompson5910
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    It's just simply \[\Large x = \frac{5}{\sqrt{2}}\] optionally you can rationalize the denominator to get \[\Large x = \frac{5\sqrt{2}}{2}\]

    • one year ago
  17. rebecca1233
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    5 divide square root 2 ?

    • one year ago
  18. jim_thompson5910
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    yep

    • one year ago
  19. rebecca1233
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    1.41

    • one year ago
  20. rebecca1233
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    1.414

    • one year ago
  21. jim_thompson5910
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    that's the approximate value of the square root of 2

    • one year ago
  22. rebecca1233
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    ok then what cause i gotta find how long the leg is

    • one year ago
  23. jim_thompson5910
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    type this into your calculator 5/sqrt(2)

    • one year ago
  24. rebecca1233
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    i did thats wat i got

    • one year ago
  25. jim_thompson5910
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    you couldn't have gotten 1.414 if you typed in 5/sqrt(2)

    • one year ago
  26. rebecca1233
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    well i did .

    • one year ago
  27. rebecca1233
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    i got more numbers than that but i just didnt write em all

    • one year ago
  28. rebecca1233
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    those were beginning numbers

    • one year ago
  29. jim_thompson5910
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    i think you just typed in sqrt(2)

    • one year ago
  30. rebecca1233
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    no.. i did the 5 / sqt 2

    • one year ago
  31. jim_thompson5910
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    well it should be 3.5355339059

    • one year ago
  32. rebecca1233
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    hmm..

    • one year ago
  33. jim_thompson5910
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    my thoughts exactly, not sure how you got 1.414

    • one year ago
  34. rebecca1233
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    hmm.. so what do i do now ?

    • one year ago
  35. jim_thompson5910
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    once you have 3.5355339059, you are done finding the approximate leg length

    • one year ago
  36. rebecca1233
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    okay. i got it.. thanks :)

    • one year ago
  37. jim_thompson5910
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    yw

    • one year ago
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