document.write( "Question 42389: Find the exact value of cos(-420º) \n" ); document.write( "
Algebra.Com's Answer #27529 by Nate(3500)\"\" \"About 
You can put this solution on YOUR website!
cos(-360º-60º)
\n" ); document.write( "cos(-2\"pi\"-\"%281%2F3%29pi\")
\n" ); document.write( "cos(-(7/3)\"pi\")
\n" ); document.write( "0.5
\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+cos%28x%29%2C+0.5+%29+\"
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