document.write( "Question 964188: Verify the identity\r
\n" );
document.write( "\n" );
document.write( "3 cos^2 B − 3 sin^2 B = 6 cos^2 B − 3\r
\n" );
document.write( "\n" );
document.write( "Thanks! \n" );
document.write( "
Algebra.Com's Answer #589075 by Alan3354(69443) You can put this solution on YOUR website! Verify the identity\r \n" ); document.write( "\n" ); document.write( "3 cos^2 B - 3 sin^2 B = 6 cos^2 B - 3 \n" ); document.write( "cos^2 B - sin^2 B = 2cos^2 B - 1 \n" ); document.write( "cos^2 = sin^2 + 2cos^2 - 1 \n" ); document.write( "cos^2 = sin^2 + cos^2 + cos^2 - 1 \n" ); document.write( "cos^2 = 1 + cos^2 - 1 \n" ); document.write( "cos^2 = cos^2 \n" ); document.write( "==================== \n" ); document.write( "If anyone wants to comment about working on one side only, pls post an example to show that it makes a difference. \n" ); document.write( " |