diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 16dd8341c5..077315e0df 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -497,9 +497,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                                              NormalizeAngle(Math.Atan2(n, Math.Sqrt(p))),
                                              NormalizeAngle(Math.Atan2(2.0 * (r.z * r.s - r.x * r.y), (t.x - t.y - t.z + t.s))));
             else if (n > 0)
-                return new LSL_Vector(0.0, Math.PI / 2, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
+                return new LSL_Vector(0.0, Math.PI * 0.5, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
             else
-                return new LSL_Vector(0.0, -Math.PI / 2, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
+                return new LSL_Vector(0.0, -Math.PI * 0.5, NormalizeAngle(Math.Atan2((r.z * r.s + r.x * r.y), 0.5 - t.x - t.z)));
         }
 
         /* From wiki:
@@ -553,12 +553,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
             double x,y,z,s;
 
-            double c1 = Math.Cos(v.x/2.0);
-            double c2 = Math.Cos(v.y/2.0);
-            double c3 = Math.Cos(v.z/2.0);
-            double s1 = Math.Sin(v.x/2.0);
-            double s2 = Math.Sin(v.y/2.0);
-            double s3 = Math.Sin(v.z/2.0);
+            double c1 = Math.Cos(v.x * 0.5);
+            double c2 = Math.Cos(v.y * 0.5);
+            double c3 = Math.Cos(v.z * 0.5);
+            double s1 = Math.Sin(v.x * 0.5);
+            double s2 = Math.Sin(v.y * 0.5);
+            double s3 = Math.Sin(v.z * 0.5);
 
             x = s1*c2*c3+c1*s2*s3;
             y = c1*s2*c3-s1*c2*s3;