document.write( "Question 335877: Solve this equation for \"%22%5B0%2C%22\"\"2pi\"\"%22%29%22\":
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Algebra.Com's Answer #240890 by Edwin McCravy(20063)\"\" \"About 
You can put this solution on YOUR website!
Solve this equation for \"%22%5B0%2C%22\"\"2pi\"\"%22%29%22\":
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document.write( "Write \"4\" in the first term as \"2%2A2\"  \r\n" );
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document.write( "\"Sin%282%2A2x%29+-+Sin%282x%29=0\"\r\n" );
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document.write( "Use the identity \"Sin%282theta%29=2%2ASin%28theta%29%2ACos%28theta%29\" with \"theta=2x\"\r\n" );
document.write( "to replace the first term:\r\n" );
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document.write( "\"2%2ASin%282x%29%2ACos%282x%29+-+Sin%282x%29=0\"\r\n" );
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document.write( "Factor out \"Sin%282x%29\" on the left:\r\n" );
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document.write( "\"Sin%282x%29%282Cos%282x%29-1%29=0\"\r\n" );
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document.write( "Set each factor on the left = 0\r\n" );
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document.write( "Notice that the coefficient of x is 2.\r\n" );
document.write( "Since we want all values x in the interval\r\n" );
document.write( "\"%22%5B0%2C%22\"\"2pi\"\"%22%29%22\", we must find all values for \r\n" );
document.write( "2x in the interval \"%22%5B0%2C%22\"\"4pi\"\"%22%29%22\"\r\n" );
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document.write( "So there are 8 solutions. \r\n" );
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document.write( "Edwin

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