Algebra.Com's Answer #606440 by Alan3354(69443)![\"\"](\"/images/stars/stars-13.gif\")  
You can put this solution on YOUR website!
Find all solutions of the equation in the interval [0,2π).\r
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document.write( "Sub 1 - sin^2 for cos^2, then it's a quadratic.
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document.write( "4 - 4sin^2 = 5 - 4sin
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document.write( "4sin^2 - 4sin + 1 = 0
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document.write( " | Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) | \n" );
document.write( "Quadratic equation  (in our case  ) has the following solutons:
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document.write( " For these solutions to exist, the discriminant  should not be a negative number.
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document.write( " First, we need to compute the discriminant :  .
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document.write( " Discriminant d=0 is zero! That means that there is only one solution:  .
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document.write( " Expression can be factored: 
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document.write( " Again, the answer is: 0.5, 0.5.\n" );
document.write( "Here's your graph:
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document.write( "sin(x) = 1/2
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document.write( "x = pi/6, 5pi/6 \n" );
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