anonymous
  • anonymous
Solve for x. Round your answer to 2 decimal places.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
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anonymous
  • anonymous
the bottom number is a 12
anonymous
  • anonymous
I give medals :)

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anonymous
  • anonymous
So we know that cos is adj/hyp.
anonymous
  • anonymous
yes
anonymous
  • anonymous
Thus: \[\cos(51)=\frac{ 12 }{ x }\]
anonymous
  • anonymous
51 degrees that is
anonymous
  • anonymous
You can then switch the position of 'x' and cos(51). Giving you \[x = \frac{ 12 }{ \cos(51) }\]
anonymous
  • anonymous
Plug that into your handy dandy calculator and you will get 19.07 (rounded)
anonymous
  • anonymous
Hope this helps :)
anonymous
  • anonymous
Thank-You so much!
anonymous
  • anonymous
No Problem!

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