small fix printing inverse trig results

Console.java

@@ -257,7 +257,12 @@ public class Console {
     }
     
     public void printTrigResult() {
-        println("= %s", parse.getFormattedAngle(calc.getDisplayValue()));
+        if (!errCheck()) {
+            println("= %s", parse.getFormattedAngle(calc.getDisplayValue()));
+        }
+        else {
+            errMessage();
+        }
     }
     
     public void printMemory() {