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JessicaChen

  • 2 years ago

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

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  1. mathtutoring22
    • 2 years ago
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    you whats SOH CAH TOA?

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

  3. mathtutoring22
    • 2 years ago
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    therefore Cos(45) = x/8

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

  5. JessicaChen
    • 2 years ago
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    @AravindG any chance of helping me?

  6. AravindG
    • 2 years ago
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    Cos(45) = x/8 solve for x

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

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

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

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

  11. JessicaChen
    • 2 years ago
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    is that right?

  12. AravindG
    • 2 years ago
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    nope

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

  14. JessicaChen
    • 2 years ago
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    so do i just multiply 70 and 8?

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