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