diff --git a/reactos/win32ss/gdi/ntgdi/arc.c b/reactos/win32ss/gdi/ntgdi/arc.c
index 611e274a8a0..c24628cbd86 100644
--- a/reactos/win32ss/gdi/ntgdi/arc.c
+++ b/reactos/win32ss/gdi/ntgdi/arc.c
@@ -22,9 +22,6 @@
        &RectBounds,                              \
        ROP2_TO_MIX(pdcattr->jROP2));
 
-#define Rsin(d) ((d) == 0.0 ? 0.0 : ((d) == 90.0 ? 1.0 : sin(d*M_PI/180.0)))
-#define Rcos(d) ((d) == 0.0 ? 1.0 : ((d) == 90.0 ? 0.0 : cos(d*M_PI/180.0)))
-
 static
 BOOL
 FASTCALL
@@ -46,8 +43,7 @@ IntArc( DC *dc,
     BOOL ret = TRUE;
     LONG PenWidth, PenOrigWidth;
     double AngleStart, AngleEnd;
-    LONG RadiusX, RadiusY, CenterX, CenterY;
-    LONG SfCx, SfCy, EfCx, EfCy;
+    LONG CenterX, CenterY;
 
     if (Right < Left)
     {
@@ -124,8 +120,6 @@ IntArc( DC *dc,
     DPRINT("1: Left: %d, Top: %d, Right: %d, Bottom: %d\n",
                RectBounds.left,RectBounds.top,RectBounds.right,RectBounds.bottom);
 
-    RadiusX = max((RectBounds.right - RectBounds.left) / 2, 1);
-    RadiusY = max((RectBounds.bottom - RectBounds.top) / 2, 1);
     CenterX = (RectBounds.right + RectBounds.left) / 2;
     CenterY = (RectBounds.bottom + RectBounds.top) / 2;
     AngleEnd   = atan2((RectSEpts.bottom - CenterY), RectSEpts.right - CenterX)*(360.0/(M_PI*2));
@@ -137,11 +131,6 @@ IntArc( DC *dc,
         AngleStart = AngleEnd + 360.0; // Arc(), ArcTo(), Pie() and Chord() are counterclockwise APIs.
     }
 
-    SfCx = (LONG)(Rcos(AngleStart) * RadiusX);
-    SfCy = (LONG)(Rsin(AngleStart) * RadiusY);
-    EfCx = (LONG)(Rcos(AngleEnd) * RadiusX);
-    EfCy = (LONG)(Rsin(AngleEnd) * RadiusY);
-
     if ((arctype == GdiTypePie) || (arctype == GdiTypeChord))
     {
         ret = IntFillArc( dc,
@@ -175,11 +164,11 @@ IntArc( DC *dc,
 
     if (arctype == GdiTypePie)
     {
-       PUTLINE(CenterX, CenterY, SfCx + CenterX, SfCy + CenterY, dc->eboLine);
-       PUTLINE(EfCx + CenterX, EfCy + CenterY, CenterX, CenterY, dc->eboLine);
+        PUTLINE(CenterX, CenterY, RectSEpts.left, RectSEpts.top, dc->eboLine);
+        PUTLINE(RectSEpts.right, RectSEpts.bottom, CenterX, CenterY, dc->eboLine);
     }
     if (arctype == GdiTypeChord)
-        PUTLINE(EfCx + CenterX, EfCy + CenterY, SfCx + CenterX, SfCy + CenterY, dc->eboLine);
+        PUTLINE(RectSEpts.right, RectSEpts.bottom, RectSEpts.left, RectSEpts.top, dc->eboLine);
 
     pbrPen->lWidth = PenOrigWidth;
     PEN_ShareUnlockPen(pbrPen);