document.write( "Question 1139613: Show that sin²x + sin²y + 2sinxsinycos(x+y) = sin²(x+y) \n" ); document.write( "
Algebra.Com's Answer #760305 by AnlytcPhil(1807)\"\" \"About 
You can put this solution on YOUR website!
Above is your solved problem!\r\n" );
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document.write( "Edwin
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