anonymous
  • anonymous
Thanks for helping! I simplified a pre calc problem into cos(x)=1/sqrt(2) From here I'm stuck, as I need to write it in terms of pi. I would really appreciate any help, thanks!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@Hero @iambatman @Kainui @jim_thompson5910 @ganeshie8 @zepdrix @Nnesha
anonymous
  • anonymous
Which value of x makes \(cos(x) = \frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}\) ?
anonymous
  • anonymous
remember the basic cos, sin and tan of 30, 45 and 60 deg?

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Nnesha
  • Nnesha
you can't hve the radical sign at the bottom so multiply top and bottom both with square root 2
anonymous
  • anonymous
yea
jim_thompson5910
  • jim_thompson5910
this unit circle may help http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Unit_circle_angles_color.svg/1024px-Unit_circle_angles_color.svg.png
anonymous
  • anonymous
oh, wait, I remember this now. Thanks for the help guys!
anonymous
  • anonymous
No problem ^^

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