document.write( "Question 898329: complete: sin 225 cos 90 - cos 225 sin 90 = \n" ); document.write( "
Algebra.Com's Answer #544745 by stanbon(75887)\"\" \"About 
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complete: sin 225 cos 90 - cos 225 sin 90
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\n" ); document.write( "(-sqrt(2)/2)(0) - (-sqrt(2)/2)*(1)
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\n" ); document.write( "= sqrt(2)/2
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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