document.write( "Question 1151813: Prove\r
\n" ); document.write( "\n" ); document.write( "sin(4x)=8sin(x)cos^3(x)-4sin(x)cos(x) \n" ); document.write( "

Algebra.Com's Answer #773684 by Edwin McCravy(20066) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "We use two identities\r\n" );
document.write( "\r\n" );
document.write( "     \r\n" );
document.write( "and\r\n" );
document.write( "     \r\n" );
document.write( "\r\n" );
document.write( "to prove:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Begin with the left side:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );