ACOS

Syntax

acos::=

Text description of acos

Purpose

ACOS returns the arc cosine of n. The argument n must be in the range of -1 to 1, and the function returns values in the range of 0 to pi, expressed in radians.

Examples

The following example returns the arc cosine of .3:

SELECT ACOS(.3)"Arc_Cosine" FROM DUAL;

Arc_Cosine
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1.26610367