ACOS()

Purpose

Function to calculate and return the angle size in radians for any given cosine value

Syntax

ACOS(<expN>)

See Also

ASIN(), ATAN(), ATN2(), COS(), DTOR(), EXP(), LOG(), LOG10(), PI(), RTOD(), SIN(), TAN(), SET DECIMALS, SET FIXED

Description

The ACOS() function calculates the angle size of a cosine value. The cosine value is represented by the numeric expression <expN>. The numeric expression must fall between -1.0 and +1.0 inclusive. The angle size is returned as a numeric in radians. The SET DECIMALS command determines the number of decimals displayed in the returned angle size.

Example

set decimal to 4
?acos(0.7071)
    0.7854
set decimals to 2
?rtod(acos(cos(dtor(30))))
     30.00