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document.write( "7sin(2x)+7sin(x)=0\r\n" );
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document.write( "Divide every term by 7\r\n" );
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document.write( "
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document.write( "
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document.write( "
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document.write( "sin(x) = 0; 2cos(x)+1 = 0\r\n" );
document.write( " cos(x) =
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document.write( "If your problem states in the interval from 0° to 360°,\r\n" );
document.write( "the answer is 0°,180°, 120°,240°\r\n" );
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document.write( "If your problem states in the interval from 0 to 2π,\r\n" );
document.write( "the answer is 0,π,2π/3,4π/3 \r\n" );
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document.write( "If your problem states for all x in degrees, \r\n" );
document.write( "the answer is 180n°, 120°+360n°, 240180°+360n180°\r\n" );
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document.write( "If your problem states for all x (in radians), \r\n" );
document.write( "the answer is n*π, 2π/3+2n*π, 4π/3+2n*π\r\n" );
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document.write( "Edwin
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document.write( "