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Ruby - Math.atan() Method



The Ruby Math.atan() method returns arc tangent of a value. The return value will be of float type and in the range -𝜋/2 through 𝜋/2.

Note: atan() is the inverse of tan().

Syntax

Math.atan(x)

Parameters

x Specify the value.

Return Value

Returns the arc tangent of the value.

Example:

In the example below, Math.atan() method is used to find out the arc tangent of a given value.

puts "Math.atan(0) = #{Math.atan(0)}"
puts "Math.atan(1) = #{Math.atan(1)}"
puts "Math.atan(2) = #{Math.atan(2)}"
puts "Math.atan(-1) = #{Math.atan(-1)}"
puts "Math.atan(-2) = #{Math.atan(-2)}"

The output of the above code will be:

Math.atan(0) = 0.0
Math.atan(1) = 0.7853981633974483
Math.atan(2) = 1.1071487177940904
Math.atan(-1) = -0.7853981633974483
Math.atan(-2) = -1.1071487177940904

❮ Ruby Math Module

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