Pano controls spinner

I have created a panoramic image using the Flash MX 2004 extenstion 370panview from Flashloaded, but any pano script could get me this far. The pano spins and zooms. I then created hotspots (rollover buttons) on the pano image to control MCs elsewhere in my scene. So far so good. Now I want the y axis rotation of the pano image to be replicated in an MC elsewhere in my scene. This MC will feature a triangular section of a 2-D circle that spins about its central vertex (the z axis). Furthermore, I want the size/shape of the triangular section to change size as the pano is zoomed. As the image is zoomed in, the triangular section grows narrower; zoom out and the triangular section grows larger. In other words, the triangular section represents, as a section of a circle, the view currently shown in the pano image. As the pano image rotates (y), the triangular section rotates (z) to show the section of the pano currently scene. The triangular section also narrows if the view of the pano image is narrowed by zooming in. I have tried several approachs but all have failed. May be my trig. May be my actionscript. I don’t know. Anyone have any good solutions to this problem?