anonymous
  • anonymous
HELPP PLEAAAASE find x.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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Nnesha
  • Nnesha
\[\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }\] which one you should use ? to find x you should know one angle and one side
anonymous
  • anonymous
cos @Nnesha

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Nnesha
  • Nnesha
cos is adjacent over hyp do you know the adjacent side of angle 40 ?
Nnesha
  • Nnesha
|dw:1432873984828:dw| opposite over hyp
anonymous
  • anonymous
sorry. @Nnesha
Nnesha
  • Nnesha
so you have to use sin 40
anonymous
  • anonymous
ok
Nnesha
  • Nnesha
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
anonymous
  • anonymous
hey genius in figure its 45 degree
Nnesha
  • Nnesha
ahh thanks
Nnesha
  • Nnesha
|dw:1432874309226:dw| \[\huge\rm sin 45= \frac{ opposite }{ hyp }\] ^
anonymous
  • anonymous
okay and then what? plug in ?
Nnesha
  • Nnesha
what's the length of opposite side of angle 45 ?
anonymous
  • anonymous
i think i got it, is the answer 11.42? @Nnesha
Nnesha
  • Nnesha
nope how did you get that ?
anonymous
  • anonymous
oh then maybe i plugged in wrong okay nevermind, please proceed. @Nnesha
Nnesha
  • Nnesha
|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
anonymous
  • anonymous
so would it be 6 sq root 2? @Nnesha
Nnesha
  • Nnesha
hmm i got decimal answer
anonymous
  • anonymous
oh my answer has to be in a square root form @Nnesha
Nnesha
  • Nnesha
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
Nnesha
  • Nnesha
yes that's right .
anonymous
  • anonymous
okay thank you!! @Nnesha

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