# acos(x)

<figure><img src="https://1037327190-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FCDzNlJZBYPEoAzf84pCC%2Fuploads%2FmsV2Y9SqplDVw1bfVMbP%2Fimage.png?alt=media&#x26;token=aaf813a4-a206-4e63-9ba2-f0194937c796" alt=""><figcaption></figcaption></figure>

## Parameters:&#x20;

x: number
