Problems trimming lines to snap to circle

[memondude]

Hi there,

I'm using Autodesk Inventor Professional 2015 and I'm trying to draw a 2D sketch in a part file.

All i'm trying to do is is to draw a circle, draw a straight line intersecting the circle (off -centre), and  get the line to snap to the circle. However, I can't actually snap exactly to the circle - whenever I zoom in, the straight line is overlapping the circle. I've tried drawing a longer line and trimming the line to intersect the circle but i get the same problem.

I've put some pictures up of the problem - any ideas to solve this would be most grateful. Thanks!

[VdVeek]

This looks like a graphical "error". It's easier for your computer to draw something that looks like a circle made out of lines. You can ignore this, inventor is calculating everything oke but can't show it on your screen. 

Rob.

[iguk2005]

my problem its seem similiar. i use autocad 2007 because my lovely 2004 didnt work at win 7 64bit. after using acad 2007 and 2013 this problem make me confuse. 

[JDMather]

In AutoCAD type Viewres and then set it to 20000 and hit Enter.

Then type Regen and hit Enter.