document.write( "Question 1161749: is cos3pi positive negative or zero \n" ); document.write( "
Algebra.Com's Answer #785390 by greenestamps(13203)\"\" \"About 
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\n" ); document.write( "3pi is coterminal with 3pi-2pi = pi

\n" ); document.write( "pi radians is a half circle; on the unit circle you are at (-1,0).

\n" ); document.write( "Cosine is the x value, which is -1.

\n" ); document.write( "ANSWER: negative
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