trigonometry_7

(1 - cos x) / sin x

W3C sample	WIRIS
	$1 x x$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <divide/>
    <apply>
      <minus/>
      <cn>1</cn>
      <apply>
        <cos/>
        <ci>x</ci>
      </apply>
    </apply>
    <apply>
      <sin/>
      <ci>x</ci>
    </apply>
  </apply>
</math>

Author: Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)