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)![]() ![]() You can put this solution on YOUR website! cos^2x+cosx=0 what is x from 0 degree to 360 degrees \n" ); document.write( "--------- \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 \n" ); document.write( "-------------- \n" ); document.write( "cos(x) = -1 \n" ); document.write( "x = 180º \n" ); document.write( " \n" ); document.write( " |