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# tf.math.angle

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

### Aliases:

• tf.angle
• tf.compat.v1.angle
• tf.compat.v1.math.angle
• tf.compat.v2.math.angle
tf.math.angle(
input,
name=None
)


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:

input = tf.constant([-2.25 + 4.75j, 3.25 + 5.75j], dtype=tf.complex64)
tf.math.angle(input).numpy()
# ==> array([2.0131705, 1.056345 ], dtype=float32)


#### 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.