# W3cubDocs

/TensorFlow Python

# tf.angle

```tf.angle(
input,
name=None
)
```

Defined in `tensorflow/python/ops/math_ops.py`.

See the guide: Math > Complex Number Functions

Returns the element-wise argument of a complex (or real) tensor.

Given a tensor `input`, this operation returns a tensor of type `float` that is the argument of each element in `input` considered as a complex number.

The elements in `input` are considered to be complex numbers of the form \(a + bj\), where a is the real part and b is the imaginary part. If `input` is real then b is zero by definition.

The argument returned by this function is of the form \(atan2(b, a)\). If `input` is real, a tensor of all zeros is returned.

For example:

```# tensor 'input' is [-2.25 + 4.75j, 3.25 + 5.75j]
tf.angle(input) ==> [2.0132, 1.056]
```

#### Args:

• `input`: A `Tensor`. Must be one of the following types: `float`, `double`, `complex64`, `complex128`.
• `name`: A name for the operation (optional).

#### Returns:

A `Tensor` of type `float32` or `float64`.

© 2018 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/api_docs/python/tf/angle