document.write( "Question 196591: Express as a single sine of cosine function:\r
\n" ); document.write( "\n" ); document.write( "a) 6sinxcosx\r
\n" ); document.write( "\n" ); document.write( "b) 1-2sin^2(x/4)
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Algebra.Com's Answer #147340 by Alan3354(69443)\"\" \"About 
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Express as a single sine of cosine function:
\n" ); document.write( "a) 6sinxcosx
\n" ); document.write( "= 3sin(2x)
\n" ); document.write( "-------------
\n" ); document.write( "b) 1-2sin^2(x/4)
\n" ); document.write( "= cos(x/2)
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