document.write( "Question 1104766: (sinx+cosx)²=3/4.find cos²2x. \n" ); document.write( "
Algebra.Com's Answer #719648 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "\"sin%282x%29+=+3%2F4+-+1+=+-1%2F4\"

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