document.write( "Question 390542: cos^2x+cosx=0 what is x from 0 degree to 360 degrees \n" ); document.write( "
Algebra.Com's Answer #276955 by Alan3354(69443)\"\" \"About 
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cos^2x+cosx=0 what is x from 0 degree to 360 degrees
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\n" ); document.write( "cos^2x+cosx=0
\n" ); document.write( "cos(cos + 1) = 0
\n" ); document.write( "cos(x) = 0
\n" ); document.write( "x = 90º, 270º
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\n" ); document.write( "cos(x) = -1
\n" ); document.write( "x = 180º
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