# Difference between revisions of "ACOS"

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[[Category:Internal_Macro_Functions]] | [[Category:Internal_Macro_Functions]] |

## Revision as of 13:02, 22 July 2010

### Command

- ACOS <n>

- Returns the arc cosine value of the input.

### Parameters

- <n>
- Anything that evaluates to a number. This can be a variable, a number, another function, or an expression which includes numbers, variables and/or functions.

- For example:

- 123
- r1
- r2 + r3
- (r1 + (abs(a1 * a2) / (b3 * 62)))

### Example

- ACOS(r1)