document.write( "Question 422033: I'm Stumped. Solve each equation on the indicated interval. Find EXACT answer\r
\n" ); document.write( "\n" ); document.write( "Sin(2Θ)Sin(Θ)= Cos(Θ), 0≤Θ<2π \n" ); document.write( "
Algebra.Com's Answer #294767 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
Sin(2Θ)Sin(Θ)= Cos(Θ), 0≤Θ<2π
\n" ); document.write( "=Sin(2x)Sin(x)= Cos(x), 0≤x<2Pi
\n" ); document.write( "=2sinxcosxsinx=cosx
\n" ); document.write( "=2sin^2xcosx-cosx=0
\n" ); document.write( "=cosx(2sin^2x-1)=0
\n" ); document.write( "cosx=0
\n" ); document.write( "x=pi/2 or 3pi/2
\n" ); document.write( "..
\n" ); document.write( "2sin^2x-1=0
\n" ); document.write( "sin^2x=1/2
\n" ); document.write( "sin^2x-1/2=0
\n" ); document.write( "(sinx-1/sqrt2)(sinx+1/sqrt2)=0
\n" ); document.write( "sinx-1/sqrt2=0
\n" ); document.write( "sinx=1/sqrt2
\n" ); document.write( "x=pi/4 or 3pi/4\r
\n" ); document.write( "\n" ); document.write( "..\r
\n" ); document.write( "\n" ); document.write( "sinx+1/sqrt2=0
\n" ); document.write( "sinx=-1/sqrt2
\n" ); document.write( "x=5pi/4 or 7pi/4\r
\n" ); document.write( "\n" ); document.write( "..
\n" ); document.write( "ans:
\n" ); document.write( "x=pi/2 or 3pi/2
\n" ); document.write( "x=pi/4 or 3pi/4
\n" ); document.write( "x=5pi/4 or 7pi/4\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );