document.write( "Question 1030979: cos 57pi \n" ); document.write( "

Algebra.Com's Answer #645694 by fractalier(6550) $\"\"$ $\"About$

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Since the cosine repeats every 2(pi),
\n" ); document.write( "cos 57(pi) = cos(pi) = -1 \n" ); document.write( "

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