document.write( "Question 397334: Please solve 2Sin(3x)+1=0\r
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\n" ); document.write( "\n" ); document.write( "Melinda \n" ); document.write( "
Algebra.Com's Answer #281693 by lwsshak3(11628)\"\" \"About 
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Please solve 2Sin(3x)+1=0
\n" ); document.write( "Will you please show each step, thank you. \r
\n" ); document.write( "\n" ); document.write( "2Sin(3x)+1=0
\n" ); document.write( "2Sin(3x)=-1
\n" ); document.write( "Sin(3x)=-1/2
\n" ); document.write( "sin(3x)=-1/2 (0\n" ); document.write( "sin is negative in the third and fourth quadrants,
\n" ); document.write( "and the reference angle is 30 deg at 210 deg and 330 deg.
\n" ); document.write( "the angle 3x, therefore = 210 deg and 330 deg\r
\n" ); document.write( "\n" ); document.write( "3x=210deg
\n" ); document.write( "x=70deg
\n" ); document.write( "3x=330deg
\n" ); document.write( "x=110deg
\n" ); document.write( "ans:x=70 deg
\n" ); document.write( "or
\n" ); document.write( "x=110 deg\r
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