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anonymous
 one year ago
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!
anonymous
 one year ago
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!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Hero @iambatman @Kainui @jim_thompson5910 @ganeshie8 @zepdrix @Nnesha

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Which value of x makes \(cos(x) = \frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}\) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0remember the basic cos, sin and tan of 30, 45 and 60 deg?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0you can't hve the radical sign at the bottom so multiply top and bottom both with square root 2

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0this unit circle may help http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Unit_circle_angles_color.svg/1024pxUnit_circle_angles_color.svg.png

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh, wait, I remember this now. Thanks for the help guys!
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