document.write( "Question 824066: решить уравнения:
\n" ); document.write( "3sinˆx+sinx*cosx=2cosˆx
\n" ); document.write( "4sinx-sin2x=3 \n" ); document.write( "
Algebra.Com's Answer #496062 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
3sin(x) + sin(x)*cos(x) = 2cos(x)
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\n" ); document.write( "3sin(x) + sin(x)cos(x) -2cos(x) = 0
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\n" ); document.write( "3sin(x) + 3sin(x)cos(x)-2sin(x)cos(x) - 2cos(x) = 0
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\n" ); document.write( "Rearrange:
\n" ); document.write( "3sin(x)-2sin(x)cos(x) + 3sin(x)cos(x)-2cos(x) = 0
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\n" ); document.write( "Factor:
\n" ); document.write( "sin(x)[3-2cos(x)] + cos(x(3-2cos(x) = 0
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\n" ); document.write( "(3-2cos(x)(sin(x)+cos(x) = 0
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\n" ); document.write( "cos(x) = 3/2 (that is extraneous)
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\n" ); document.write( "sin(x) = -cos(x)
\n" ); document.write( "x = 135 degrees or (3/4)pi radians
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\n" ); document.write( "\n" ); document.write( "4sin(x)-sin(2x) = 3
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\n" ); document.write( "Graphing I get x = 67.73.. degrees = 1.182.. radians
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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