document.write( "Question 916445: Prove that Cos^2 x(1-sec^2 x) = -sin^2 x
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #556064 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Cos^2 x(1-sec^2 x) = -sin^2 x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Cos^2 x(Sec^2x-tan^2x-sec^2 x) = -sin^2 x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "cos^2x * -tan^2x\r \n" ); document.write( "\n" ); document.write( "cos^2x *-sin^2x/cos^2x\r \n" ); document.write( "\n" ); document.write( "=-sin^2x \n" ); document.write( " |