document.write( "Question 518176: Establish the identity
\n" ); document.write( "sin (alpha + beta)/(cos alpha cos beta) = tan alpha + tan beta \n" ); document.write( "

Algebra.Com's Answer #345067 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

\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" );