document.write( "Question 284200: sin^2 60degree - cos^2 30degree \n" ); document.write( "
Algebra.Com's Answer #206207 by Alan3354(69443)\"\" \"About 
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sin^2 60degree - cos^2 30degree
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\n" ); document.write( "cos(30) = sin(60)
\n" ); document.write( "sin^2 60degree - cos^2 30degree = 0
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