diff --git a/source/precalculus/source/06-TR/03.ptx b/source/precalculus/source/06-TR/03.ptx
index d3f19f3d9..5a5490e10 100644
--- a/source/precalculus/source/06-TR/03.ptx
+++ b/source/precalculus/source/06-TR/03.ptx
@@ -390,7 +390,7 @@
       </statement>
       <answer>
         <p>
-          A
+          B
         </p>
       </answer>
     </task>
@@ -407,7 +407,7 @@
       </statement>
       <answer>
         <p>
-          D
+          C
         </p>
       </answer>
     </task>
diff --git a/source/precalculus/source/06-TR/prefigure/TR3-triangle7.xml b/source/precalculus/source/06-TR/prefigure/TR3-triangle7.xml
index be44b9349..c7f0d3530 100644
--- a/source/precalculus/source/06-TR/prefigure/TR3-triangle7.xml
+++ b/source/precalculus/source/06-TR/prefigure/TR3-triangle7.xml
@@ -6,7 +6,7 @@
   <definition>bb=b*scale</definition>
   <coordinates bbox="(0,0,bb,aa)">
 
-    <line at="b" endpoints="((0,0),(bb,0))" offset="(0,-20)"  annotate="yes" text="The horizontal leg is labeled 300"><m>300</m></line>
+    <line at="b" endpoints="((0,0),(bb,0))" offset="(0,-20)"  annotate="yes" text="The horizontal leg is labeled ${b}"><m>${b}</m></line>
     <line at="a"  endpoints="((0,0),(0,aa))" annotate="yes" rotate="90" offset="(0,5)" text="The vertical leg is labeled x"><m>x</m></line>
     <line at="h" endpoints="((bb,0),(0,aa))" offset="(0,-10)" rotate="180"/>
     <angle-marker at="angle" points="((bb,0),(0,0),(0,aa))"/>