document.write( "Question 1090342: Instructions: Solve. Give exact answers in radians, 0<_x<_2pi
\n" ); document.write( "Problem: 2cos^2 x + sinx - 1 = 0\r
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Algebra.Com's Answer #704777 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
2cos^2 x + sinx - 1 = 0
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\n" ); document.write( "Sub for cos^2
\n" ); document.write( "2(1-sin^2) + sin - 1 = 0
\n" ); document.write( "2sin^2 - sin - 1 = 0
\n" ); document.write( "(2sin + 1)*(sin - 1) = 0
\n" ); document.write( "sin(x) = 1
\n" ); document.write( "sin(x) = -1/2
\n" ); document.write( "etc\r
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