function acos_(x) {
    const $x = (0, _tensorUtilEnv.convertToTensor)(x, "x", "acos");
    const inputs = {
        x: $x
    };
    return (0, _engine.ENGINE).runKernel((0, _kernelNames.Acos), inputs);
}
Computes acos of the input `tf.Tensor` element-wise: `acos(x)`

```js
const x = tf.tensor1d([0, 1, -1, .7]);

x.acos().print();  // or tf.acos(x)
```
@param x The input tensor.
@doc {heading: 'Operations', subheading: 'Basic math'}