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JessicaChen

Find x in these 45 - 45 - 90 triangles. http://tinypic.com/r/rtg4ty/5 x= () square root ()

  • 10 months ago
  • 10 months ago

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  1. mathtutoring22
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    you whats SOH CAH TOA?

    • 10 months ago
  2. mathtutoring22
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    Cos(theta) = adjacent/hypothenus

    • 10 months ago
  3. mathtutoring22
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    therefore Cos(45) = x/8

    • 10 months ago
  4. mathtutoring22
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    you can use the graphic calculator. make sure it is on radian mode

    • 10 months ago
  5. JessicaChen
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    @AravindG any chance of helping me?

    • 10 months ago
  6. AravindG
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    Cos(45) = x/8 solve for x

    • 10 months ago
  7. JessicaChen
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    do i just multiply (45) and 8? and find the square root from there

    • 10 months ago
  8. AravindG
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    nope cos 45 is 1/root(2)

    • 10 months ago
  9. AravindG
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    so you multiply 1/root{2} with 8

    • 10 months ago
  10. JessicaChen
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    1 square root of 2 is 1.4

    • 10 months ago
  11. JessicaChen
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    is that right?

    • 10 months ago
  12. AravindG
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    nope

    • 10 months ago
  13. AravindG
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    1/root(2)=1/1.414=0.707

    • 10 months ago
  14. JessicaChen
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    so do i just multiply 70 and 8?

    • 10 months ago
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