How the inner wheel angle is more than outer wheel angle? is it natural ie if i design a steering linkages then it will operate like this or we have to do something to make inner wheel angle more??? how to find the inner wheel angle ???

You have opened another thread on steering already. The advice everybody gave you is to seek professional help (ok, that sounds wrong... I mean professional mechanics, lol).

 

Cars already have quite perfect steering - just copy that, or better: have someone else built something standard for you. Much safer, and probably much better.

 

If you want to have a racing team (you said that in the other thread), step 1 is to get a good mechanic into the team!

 

Anyway, if you insist to build it yourself (I really hope you're working with Lego and not on a real car), here's something that took me only 1 minute to Google. And here's some more. It's a picture of Davis steering and Ackermann steering, complete with angles and formulas. Should be sufficient to work out the rest yourself.