document.write( "Question 958632: 7sin(2x)+7sin(x)=0 \n" ); document.write( "
Algebra.Com's Answer #586148 by Edwin McCravy(20063)\"\" \"About 
You can put this solution on YOUR website!
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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( "\"7sin%282x%29%2F7%2B7sin%28x%29%2F7=0%2F7\"\r\n" );
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document.write( "\"sin%282x%29%2Bsin%28x%29=0\"\r\n" );
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document.write( "\"2sin%28x%29cos%28x%29%2Bsin%28x%29=0\"\r\n" );
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document.write( "\"sin%28x%29%282cos%28x%29%2B1%5E%22%22%29=0\"\r\n" );
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document.write( "sin(x) = 0;   2cos(x)+1 = 0\r\n" );
document.write( "                 cos(x) = \"-1%2F2\"\r\n" );
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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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