There are a few situations in VRML where you must enter a value for an angle, and the entry must be in radians, not degrees. To convert from degrees to radians, use the following formula. Divide degrees by 180 and then multiply by 3.142 to get radians. This is the only information you need to complete your VRML script, although, you can enhance your knowledge in this area by studying subjects such as circle, circumference, arc and pi.