document.write( "Question 1131786: Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.
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\n" ); document.write( "tan 42° − tan 12°/1 + tan 42° tan 12°\r
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Algebra.Com's Answer #748464 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Not clear. \n" ); document.write( "
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