document.write( "Question 1143137: Show the formula for Sin4A \n" ); document.write( "
Algebra.Com's Answer #763909 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
What formula?
\n" ); document.write( "There are many.
\n" ); document.write( "Look up \"Half angle formulas\" on Wikipedia.
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