Converts x
to a double and returns the arc cosine of the value.
Returns a value in the range -PI..PI, or NaN if x
is outside
the range -1..1.
Source
external double acos(num x);
Converts x
to a double and returns the arc cosine of the value.
Returns a value in the range -PI..PI, or NaN if x
is outside
the range -1..1.
external double acos(num x);