Returns the arc cosine of a floating-point value.
ACOS(x)
x is a floating-point value such that -1 ≤ x ≤ 1, or is an expression that can be converted to such a value.
ACOS(1.0) /* returns 0.0 */
An ACOS operation on Float Decimal data is actually performed using its Float Binary equivalent. Thus, the ranges of the operands and the result are limited to the range of Float Binary data.
Description
ACOS(x) returns the arc cosine of x expressed in radians, such that 0 ≤ ACOS(x) ≤ Π. The result is a floating-point value.