Returns the arc cosine of a specified numeric expression.
Syntax
ACOS(nExpression)
Returns
Numeric
Arguments
nExpression
Specifies a numeric expression whose arc cosine ACOS( ) returns. The value of nExpression can range from –1 through +1. The value returned by ACOS( ) ranges from 0 through pi (3.141592). The number of decimal places ACOS( ) returns is determined by SET DECIMALS.
Use RTOD( ) to convert radians to degrees.
Remarks
The arc cosine is returned in radians.