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@node Miscellaneous
@section Miscellaneous
Miscellaneous math procedures.
@anchor{2d math pi}@defvar pi
@end defvar
@anchor{2d math degrees->radians}@defun degrees->radians angle
Convert ANGLE in degrees to radians.
@end defun
@anchor{2d math radians->degrees}@defun radians->degrees angle
Convert ANGLE in radians to degrees.
@end defun
@anchor{2d math sin-degrees}@defun sin-degrees angle
Compute the sin of ANGLE expressed in degrees.
@end defun
@anchor{2d math cos-degrees}@defun cos-degrees angle
Compute the cosine of ANGLE expressed in degrees.
@end defun
@anchor{2d math tan-degrees}@defun tan-degrees angle
Compute the tangent of ANGLE expressed in degrees.
@end defun
@anchor{2d math atan-degrees}@defun atan-degrees y x
Compute the arctangent in degrees of the coordinates Y and X.
@end defun
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