Alternatives:	(mml file)  (full) (simple) (plain) (form) (slideshow)
File:	Content/ElementaryFunctions/trigonometry_3
CVS-ID:
Author:	Design Science, Inc. (D. Doyle, E. Cannon, E. Tabacman, R.Miner)
Description:	sec(xy)2b / tan (x+y)
passed (p) failed (f) not-tested (n) broken-test (b) some parts pass (s)
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Source Code:

    <math xmlns="http://www.w3.org/1998/Math/MathML"> 
      <apply> 
        <divide /> 
        <apply> 
          <times/> 
          <apply> 
            <sec/> 
            <apply> 
              <times/> 
              <ci> x </ci> 
              <ci> y </ci> 
            </apply> 
          </apply> 
          <apply> 
            <times/> 
            <cn>2</cn> 
            <ci>b</ci> 
          </apply> 
        </apply> 
        <apply> 
          <tan /> 
          <apply> 
            <plus /> 
            <cn>x</cn> 
            <cn>y</cn> 
          </apply> 
        </apply> 
      </apply> 
    </math>