math.acos

math.acosmathacos

/apidoc/8.0/math:acos.xml

Returns the arc cosine of x, in radians, in the range from 0 to pi (inclusive).

The fraction to be evaluated. Must be in the range of -1 to +1 (inclusive).

x

Number

Number

  math.acos(.5)

  => 1.0471975511966