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((System Query Functions))_AD
System Query((Trigonometry Functions))_AD
Query_Lang-SystemFunctions_Trigonometry_ACOSACOS_AD
Created: 九月 05, 2015 | Updated: 八月 13, 2021
| Applies to versions: 15.1, 16.0, 16.1, 17.0, 17.1, 18.0, 18.1, 19.0, 19.1, 20.0, 20.1 and 20.2
您正在阅读的是 15.1. 版本。关于最新版本，请前往 Query_Lang-SystemFunctions_Trigonometry_ACOS((ACOS))_AD 阅读 21 版本
Parent page: System Query Functions - Trigonometry Functions
Summary
Returns a (real) number whose value is equal to the angle of the inverse cosine of the number specified by the parameter's numeric value; that angle is in units of radians (and not degrees).
Syntax
ACOS(X : Number / Numeric_String) : Number
Example Usage
ACOS(0)
Returns 1.5708.
ACOS(0.5)
Returns 1.0472.
ACOS(1)
Returns 0.