Ruby - Math.acos() Method
The Ruby Math.acos() method returns arc cosine of a value. The returned value will be of float type and in the range 0 through 𝜋.
Note: acos() is the inverse of cos().
Syntax
Math.acos(x)
Parameters
x |
Specify the value. |
Return Value
Returns the arc cosine of the value.
Example:
In the example below, Math.acos() method is used to find out the arc cosine of a given value.
puts "Math.acos(0) = #{Math.acos(0)}"
puts "Math.acos(0.5) = #{Math.acos(0.5)}"
puts "Math.acos(1) = #{Math.acos(1)}"
puts "Math.acos(-0.5) = #{Math.acos(-0.5)}"
puts "Math.acos(-1) = #{Math.acos(-1)}"
The output of the above code will be:
Math.acos(0) = 1.5707963267948966 Math.acos(0.5) = 1.0471975511965979 Math.acos(1) = 0.0 Math.acos(-0.5) = 2.0943951023931957 Math.acos(-1) = 3.141592653589793
❮ Ruby Math Module
