acos function Null safety
- num x
Converts x to a double and returns its arc cosine in radians.
Returns a value in the range 0..PI, or NaN if x is outside
the range -1..1.
Implementation
external double acos(num x);Converts x to a double and returns its arc cosine in radians.
Returns a value in the range 0..PI, or NaN if x is outside
the range -1..1.
external double acos(num x);