|---| | [ View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v2.21.0/tensorflow/python/ops/math_ops.py#L5874-L5902) | Computes acos of x element-wise. #### View aliases **Main aliases** [`tf.acos`](https://www.tensorflow.org/api_docs/python/tf/math/acos) **Compat aliases for migration** See [Migration guide](https://www.tensorflow.org/guide/migrate) for more details. [`tf.compat.v1.acos`](https://www.tensorflow.org/api_docs/python/tf/math/acos)
tf.math.acos( x, name=None ) ### Used in the notebooks | Used in the tutorials | |---| | - [Universal Sentence Encoder](https://www.tensorflow.org/hub/tutorials/semantic_similarity_with_tf_hub_universal_encoder) - [Universal Sentence Encoder-Lite demo](https://www.tensorflow.org/hub/tutorials/semantic_similarity_with_tf_hub_universal_encoder_lite) | Provided an input tensor, the [`tf.math.acos`](https://www.tensorflow.org/api_docs/python/tf/math/acos) operation returns the inverse cosine of each element of the tensor. If `y = tf.math.cos(x)` then, `x = tf.math.acos(y)`. Input range is `[-1, 1]` and the output has a range of `[0, pi]`. #### For example: x = tf.constant([1.0, -0.5, 3.4, 0.2, 0.0, -2], dtype = tf.float32) tf.math.acos(x)


| ## Args || |---|---| | `x` | A `Tensor`. Must be one of the following types: `bfloat16`, `half`, `float32`, `float64`, `complex64`, `complex128`. | | `name` | A name for the operation (optional). |



| ## Returns || |---|---| | A `Tensor`. Has the same type as x. ||