How to calculate toe in degrees?

My google skills are failing me and my math skills have been failing me since 1st grade so I need some help. Does anyone know the formula to convert toe from measurements (the front/rear of a 13" rim to a string parallel to the centerline of the car) into degrees? As far as I understand it should be some simple trigonometry but I can’t find anything about it.

Thanks! Classic IndyCars for your time!

Illustration for article titled How to calculate toe in degrees?
Advertisement