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highschoolmom2010

  • 2 years ago

solve for x using sin, cos, tan

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  1. highschoolmom2010
    • 2 years ago
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  2. goformit100
    • 2 years ago
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    ues Pytha goras theorem, or use trigonometric identities directly..... Say what you prefer most ?

  3. highschoolmom2010
    • 2 years ago
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    \[\sin 36=\frac{ 10 }{ x }\] \[(x*)\sin36=\frac{ 10 }{ x }(* X)\]

  4. highschoolmom2010
    • 2 years ago
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    thats as far as i have gotten

  5. highschoolmom2010
    • 2 years ago
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    \[X \sin 36=10\]

  6. ganeshie8
    • 2 years ago
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    \( (x*)\sin36=\frac{ 10 }{ \cancel{x} }(* \cancel{X}) \)

  7. ganeshie8
    • 2 years ago
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    keep going, your target is x

  8. highschoolmom2010
    • 2 years ago
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    how do i get x alone

  9. highschoolmom2010
    • 2 years ago
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    do i divide by sin 36?

  10. ganeshie8
    • 2 years ago
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    yes !

  11. highschoolmom2010
    • 2 years ago
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    so \[x=\frac{ 10 }{ \sin 36 }\]

  12. ganeshie8
    • 2 years ago
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    looks perfect !

  13. highschoolmom2010
    • 2 years ago
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    17.01

  14. highschoolmom2010
    • 2 years ago
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    or 17 approx

  15. ganeshie8
    • 2 years ago
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    \(17 = \color{red}{\checkmark}\)

  16. highschoolmom2010
    • 2 years ago
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    im unsure sometimes on how to do some steps ^^

  17. ganeshie8
    • 2 years ago
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    you're doing great, takes lil practice thats all :)

  18. phi
    • 2 years ago
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    you got to Xsin36=10 if the problem was x*2 = 10 you would know what to do: divide both sides by 2 the reason you are unsure of what to do is you are forgetting that sin36 is just a fancy way to write down a number. You can always divide both sides by a number.

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spraguer (Moderator)
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