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anonymous

  • one year ago

HELPP PLEAAAASE find x.

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  1. anonymous
    • one year ago
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  2. Nnesha
    • one year ago
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    \[\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }\] which one you should use ? to find x you should know one angle and one side

  3. anonymous
    • one year ago
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    cos @Nnesha

  4. Nnesha
    • one year ago
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    cos is adjacent over hyp do you know the adjacent side of angle 40 ?

  5. Nnesha
    • one year ago
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    |dw:1432873984828:dw| opposite over hyp

  6. anonymous
    • one year ago
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    sorry. @Nnesha

  7. Nnesha
    • one year ago
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    so you have to use sin 40

  8. anonymous
    • one year ago
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    ok

  9. Nnesha
    • one year ago
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    it's okay why we have to use sin ? bec they gave you opposite side of angle now you know one angle and one side so you can find hyp \[\huge\rm sin 40= \frac{ opposite }{ hyp }\] solve^ sin 40 degree

  10. anonymous
    • one year ago
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    hey genius in figure its 45 degree

  11. Nnesha
    • one year ago
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    ahh thanks

  12. Nnesha
    • one year ago
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    |dw:1432874309226:dw| \[\huge\rm sin 45= \frac{ opposite }{ hyp }\] ^

  13. anonymous
    • one year ago
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    okay and then what? plug in ?

  14. Nnesha
    • one year ago
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    what's the length of opposite side of angle 45 ?

  15. anonymous
    • one year ago
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    i think i got it, is the answer 11.42? @Nnesha

  16. Nnesha
    • one year ago
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    nope how did you get that ?

  17. anonymous
    • one year ago
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    oh then maybe i plugged in wrong okay nevermind, please proceed. @Nnesha

  18. Nnesha
    • one year ago
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    |dw:1432874592602:dw| the side that touches the angle is adjacent red line is the opposite side of sin 45 angle opposite =6 hyp =x now plug in

  19. anonymous
    • one year ago
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    so would it be 6 sq root 2? @Nnesha

  20. Nnesha
    • one year ago
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    hmm i got decimal answer

  21. anonymous
    • one year ago
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    oh my answer has to be in a square root form @Nnesha

  22. Nnesha
    • one year ago
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    ohh alright then you have to use unit circle sin value is what at 45 angle remember in order pair x coordinate represent cosine and y coordinate represent sin

  23. Nnesha
    • one year ago
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    yes that's right .

  24. anonymous
    • one year ago
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    okay thank you!! @Nnesha

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