document.write( "Question 292700: I need to verify that the equation is an identity.\r
\n" ); document.write( "\n" ); document.write( "\"%28sinx-cosx%29%5E2=1-sin2x\"\r
\n" ); document.write( "\n" ); document.write( "I have used an identity to change it to\r
\n" ); document.write( "\n" ); document.write( "sin^2x-cos^2x=1-sin2x\r
\n" ); document.write( "\n" ); document.write( "then I thought I could try to change it to\r
\n" ); document.write( "\n" ); document.write( "sin^2x-cos^2x=1-2sinxcosx\r
\n" ); document.write( "\n" ); document.write( "I am not sure if I am on the right track. Thank you.
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Algebra.Com's Answer #211367 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
try expanding the left side using FOIL\r
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\n" ); document.write( "\n" ); document.write( "then rearrange the terms for clarity
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