document.write( "Question 903245: Evaluate cos 3pi using its period as an aid
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Algebra.Com's Answer #547876 by Alan3354(69443) You can put this solution on YOUR website! cos(3pi) = cos(3pi - 2pi) = cos(pi) \n" ); document.write( "= -1 \n" ); document.write( " \n" ); document.write( " |