.tan()

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Published Aug 22, 2024
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In NumPy, the `.tan()` function calculates the tangent of each element in an array, where the elements are interpreted as angles in radians. It is used for mathematical computations involving trigonometric operations.

Syntax

``````numpy.tan(array, out = None, where=True)
``````
• `array`: An array-like or scalar containing angles in radians. The function computes the tangent of each element.
• `out`: An optional parameter specifying an array where the result will be stored. If not provided, a new array is created.
• `where`: A condition or boolean array that determines which elements of `array` are used to compute the tangent. The tangent is computed only for elements where the condition is `True`, other elements remain unchanged.

Example

The below example shows the `.tan()` function in use:

```import numpy as np
# Array of angles in radiansangles_in_radians = np.array([0, np.pi/6, np.pi/4, np.pi/3])
# Create an empty array to store the resultsout = np.empty_like(angles_in_radians)
# Compute the tangent of each angletangents = np.tan(angles_in_radians, out=out)
print("Tangents:", out)
```

The output would be:

```Tangents: [0.         0.57735027 1.         1.73205081]
```

Codebyte Example

Run the following code to understand how the `.tan()` function works:

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