document.write( "Question 932739: Find the exact value using a double-angle identity.\r
\n" ); document.write( "\n" ); document.write( "cos \"+5pi%2F3+\"\r
\n" ); document.write( "\n" ); document.write( "Could you please show the steps to get the answer?
\n" ); document.write( "Thank you!
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Algebra.Com's Answer #566367 by Alan3354(69443)\"\" \"About 
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Find the exact value using a double-angle identity.\r
\n" ); document.write( "\n" ); document.write( "cos \"+5pi%2F3+\"
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\n" ); document.write( "= 0.5
\n" ); document.write( "No reason to use the double-angle identity.
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\n" ); document.write( "5pi/3 = 300 degrees
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