document.write( "Question 250830: evaluate without a calculator, give answer in exact value.\r
\n" ); document.write( "\n" ); document.write( " sin(2 cos-1 4/5)
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Algebra.Com's Answer #182656 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
There is no cosine of 1 4/5. Not in real numbers, anyway. \n" ); document.write( "
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