document.write( "Question 888190: Use a Double- or Half-Angle Formula to solve the equation in the interval [0, 2π). (Enter your answers as a comma-separated list. Round your answers to three decimal places where appropriate.)
\n" ); document.write( "−sin 2θ − cos 4θ = 0 \n" ); document.write( "
Algebra.Com's Answer #537178 by lwsshak3(11628)\"\" \"About 
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Use a Double- or Half-Angle Formula to solve the equation in the interval [0, 2π). (Enter your answers as a comma-separated list. Round your answers to three decimal places where appropriate.)
\n" ); document.write( "−sin 2θ − cos 4θ = 0
\n" ); document.write( "***
\n" ); document.write( "\"-sin%282theta%29-cos%284theta%29=0\"
\n" ); document.write( "\"-sin%282theta%29-%281-2sin%5E2%282theta%29%29=0\"
\n" ); document.write( "\"-sin%282theta%29-1%2B2sin%5E2%282theta%29=0\"
\n" ); document.write( "\"2sin%5E2%282theta%29-sin%282theta%29-1=0\"
\n" ); document.write( "\"%282sin%282theta%29%2B1%29%28sin%282theta%29-1%29=0\"
\n" ); document.write( "..
\n" ); document.write( "\"2sin%282theta%29%2B1=0\"
\n" ); document.write( "\"sin%282theta%29=-1%2F2\"
\n" ); document.write( "2theta=7π/6, 11π/6
\n" ); document.write( "theta=7π/12, 11π/12
\n" ); document.write( "or
\n" ); document.write( "\"sin%282theta%29-1=0\"
\n" ); document.write( "\"sin%282theta%29=1\"
\n" ); document.write( "\"2theta=pi%2F2\"
\n" ); document.write( "\"theta=pi%2F4\" \n" ); document.write( "
\n" );