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highschoolmom2010

  • one year ago

using sin, cos or tan find the value of X

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  1. highschoolmom2010
    • one year ago
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  2. ganeshie8
    • one year ago
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    SOH-CAH-TOA

  3. ganeshie8
    • one year ago
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    go to the given angle corner, and look at the triangle. figure out wat adjacent side and hypotenuse are

  4. ganeshie8
    • one year ago
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    |dw:1376246607998:dw|

  5. highschoolmom2010
    • one year ago
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    adjacent is x and opposite is unknown

  6. highschoolmom2010
    • one year ago
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    hypotenuse is 11

  7. ganeshie8
    • one year ago
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    yes !

  8. highschoolmom2010
    • one year ago
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    so we use cos

  9. ganeshie8
    • one year ago
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    you want to find x, which is adjacent you knw the hypotenuse so, which trig ratio helps us ?

  10. ganeshie8
    • one year ago
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    yes, cos !!

  11. highschoolmom2010
    • one year ago
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    \[\cos 41=\frac{ x }{ 11 }\]

  12. ganeshie8
    • one year ago
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    perfect !

  13. highschoolmom2010
    • one year ago
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    \[(11*)\cos 41=\frac{ x }{ 11 }*11\] \[11\cos 41=8.3\]

  14. ganeshie8
    • one year ago
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    8.3 = \(\large \color{red}{\checkmark}\)

  15. highschoolmom2010
    • one year ago
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    so i did it right :DDD

  16. ganeshie8
    • one year ago
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    you did great :) good work !!

  17. highschoolmom2010
    • one year ago
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    thanks i think i understand this now

  18. ganeshie8
    • one year ago
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    good :D

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