DTOR
Returns the factor for converting from degrees to radians.
Format
DTORExample
<Force_Scalar_TwoBody
id = "32"
type = "Force"
i_marker_id = "175"
body1_id = "31"
j_marker_id = "176"
body2_id = "35"
val_expression = "90*DTOR" >
</Force_Scalar_TwoBody>