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fc3857
 2 years ago
cos^2(x) + 2 cos x + 1 = 0
fc3857
 2 years ago
cos^2(x) + 2 cos x + 1 = 0

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ucreategames
 2 years ago
Best ResponseYou've already chosen the best response.0http://www.wolframalpha.com/input/?i=cos^2%28x%29+%2B+2+cos+x+%2B+1+%3D+0

fc3857
 2 years ago
Best ResponseYou've already chosen the best response.1I still don't completely understand.
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