Trigonometric inverse tangent, element-wise.
The inverse of tan, so that if y = tan(x) then x = atan(y).
| Parameters: | x – (array_like) Input values, atan is applied to each element of x. |
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| Returns: | (array_like) Out has the same shape as x. Its real part is in [-pi/2, pi/2] . |
Examples:
>>> atan([0, 1])
array([0.0, 0.7853982])