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# scipy.special.cotdg

scipy.special.cotdg(x, out=None) = <ufunc 'cotdg'>

  Cotangent of the angle x given in degrees.

  Parameters:
    x array_like

      Angle, given in degrees.

    out ndarray, optional

      Optional output array for the function results.

  Returns:
    scalar or ndarray

      Cotangent at the input.

  See also

  `sindg`, `cosdg`, `tandg`

  Notes

  Array API Standard Support

  `cotdg` has experimental support for Python Array API Standard compatible backends in addition to NumPy. Please consider testing these features by setting an environment variable `SCIPY_ARRAY_API=1` and providing CuPy, PyTorch, JAX, or Dask arrays as array arguments. The following combinations of backend and device (or other capability) are supported.

  Library | CPU | GPU
  --- | --- | ---
  NumPy | ✅ | n/a
  CuPy | n/a | ✅
  PyTorch | ✅ | ⛔
  JAX | ✅ | ⛔
  Dask | ✅ | n/a

  See Support for the array API standard for more information.

  Examples

      >>> import numpy as np
      >>> import scipy.special as sc

  It is more accurate than using cotangent directly.

      >>> x = 90 + 180 * np.arange(3)
      >>> sc.cotdg(x)
      array([0., 0., 0.])
      >>> 1 / np.tan(x * np.pi / 180)
      array([6.1232340e-17, 1.8369702e-16, 3.0616170e-16])