https://math.answers.com/math-and-arithmetic/How_do_you_change_degrees_to_radians_in_geometry
How do you change degrees to radians in geometry? - Answers
Multiply the degrees by pi and divide by 180.
how do youdegrees to radianschangegeometryanswers
https://kr.mathworks.com/help/matlab/ref/deg2rad.html
deg2rad - Convert angle from degrees to radians - MATLAB
This MATLAB function converts angle units from degrees to radians for each element of D.
degrees to radiansconvertanglematlab