dpnp.arccos

dpnp.arccos(x, out=None, where=True, order='K', dtype=None, subok=True, **kwargs)

Computes inverse cosine for each element x_i for input array x.

For full documentation refer to numpy.arccos.

Parameters:

• x ({dpnp.ndarray, usm_ndarray}) – Input array, expected to have numeric data type.

• out ({None, dpnp.ndarray}, optional) – Output array to populate. Array must have the correct shape and the expected data type.

• order ({"C", "F", "A", "K"}, optional) – Memory layout of the newly output array, if parameter out is None. Default: “K”.

Returns:

out – An array containing the element-wise inverse cosine, in radians and in the closed interval [-pi/2, pi/2]. The data type of the returned array is determined by the Type Promotion Rules.

Return type:

dpnp.ndarray

Limitations

Parameters where and subok are supported with their default values. Keyword argument kwargs is currently unsupported. Otherwise NotImplementedError exception will be raised.

See also

dpnp.cos

Trigonometric cosine, element-wise.

dpnp.arctan

Trigonometric inverse tangent, element-wise.

dpnp.arcsin

Trigonometric inverse sine, element-wise.

dpnp.arccosh

Hyperbolic inverse cosine, element-wise.

Examples

>>> import dpnp as np
>>> x = np.array([1, -1])
>>> np.arccos(x)
array([0.0,  3.14159265])