Question : trig questions

how do i create trig questions that round to 2 dec places .
I have a computer program

The issue is  some calculations give a slight difference depending if you truncate or round off steps in working out sin,cos,tan questions.

http://208.81.130.41/$sitepreview/mrt.com/trigtrainer2/mathsTrainer1.Web/mathsTrainer1TestPage.aspx

Answer : trig questions

Ok, I figured it out, I had installed Source Gear's Vault (an older version) and that is what seems to caused the problem. I uninstalled it and it no longer throwing that error.