Merge pull request Khan#9670 from Christi/patch-2

fix Khan#9183; fix Khan#9568

exercises/inverse_trig_functions.html

@@ -86,8 +86,7 @@
 			<p>If <code><var>FN_TEX( PRETTY( X ), false )</var> = \theta</code>, then...</p>
 			<p><code><var>"\\" + FN</var>\left( \theta \right) = <var>PRETTY( X )</var></code></p>
 			<p>The range of <code><var>FN_TEX( "x" )</var></code> is <code>[ <var>DOMAIN[0]</var>, <var>DOMAIN[1]</var> ]</code>, so we know <code><var>DOMAIN[0]</var> \leq \theta \leq <var>DOMAIN[1]</var></code>.</p>
-			<p><code><var>"\\" + FN</var> \left( <var>fractionReduce( Y_RADIANS[0], Y_RADIANS[1], true )</var>\pi \right) = <var>PRETTY( X )</var></code></p>
-			<p data-if="DEG"><code><var>fractionReduce( Y_RADIANS[0], Y_RADIANS[1], true )</var>\pi\mbox{ (radians) }=<var>Y_DEGREES</var> &deg;</code></p>
+			<p><code><var>"\\" + FN</var> \left( <var>( DEG ? Y_DEGREES + "&deg;" : fractionReduce( Y_RADIANS[0], Y_RADIANS[1], true ) + "\\pi" )</var> \right) = <var>PRETTY( X )</var></code></p>
 			<p>So <code><var>FN_TEX( PRETTY( X ) )</var> = <var>DEG ? Y_DEGREES + "&deg;" : fractionReduce( Y_RADIANS[0], Y_RADIANS[1], true ) + "\\pi"</var></code>.</p>
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