In Ruby, Modules are defined as a collection of methods, classes, and constants together. Math module consists of the module methods for basic trigonometric and transcendental functions.
Module Constants
Name
Description
E
Define the value of base of natural logarithm e.
PI
Define the value of π.
Example:
Output:
2.718281828459045
3.141592653589793
Module Methods
acos : This method calculate the arc cosine of given value a. It return in the range[0..PI]. The return type of this method is float.
Math.acos(a)
Example:
Output:
1.5707963267948966
true
acosh : This method calculate the inverse hyperbolic cosine of given value a. The return type of this method is float.
Math.acosh(a)
asin : This method calculate the arc sine of given value a. It return in the range[-PI/2..PI/2]. The return type of this method is float.
Math.asin(a)
asinh : This method calculate the inverse hyperbolic sine of given value a. The return type of this method is float.
Math.asinh(a)
Example:
Output:
1.4436354751788103
atan : This method calculate the arc of tangent of given of given value a. It returns in the range[-PI..PI]. The return type of this method is the float.
Math.atan(a)
atanh : This method calculate the inverse hyperbolic tangent of given value a. The return type of this method is float.
Math.atanh(a)
Example:
Output:
0.5493061443340548
atan2 : This method calculate the arc of tangent of given value a and b. It returns in the range[-PI..PI]. The return type of this method is float.
Math.atan2(a, b)
cos : This method calculate the cosine of given value a, expressed in radians and return in the range[-1.0..1.0]. The return type of this method is float.
Math.cos(a)
Example:
Output:
0.5403023058681398
cosh : This method calculate the hyperbolic cosine of given value a and expressed in radians. The return type of this method is float.
Math.cosh(a)
erf : This method returns the error function of given value a. The return type of this method is float.
Math.erf(a)
erfc : This method returns the complementary error function of given value a. The return type of this method is float.
Math.erfc(a)
exp : This method returns the value of ea. The return type of this method is float.
Math.exp(a)
Example:
Output:
7.38905609893065
frexp : This method returns a two-element array that consisting the normalized fraction and exponent of numeric.
Math.frexp(numeric)
hypot :This method returns √a2+b2. Or in other words it returns the hypotenuse of right-angle triangle with sides a and b. The return type of this method is float.
Math.hypot(a, b)
Example:
Output:
6.4031242374328485
Idexp : This method returns the value of float * 2 integer. The return type of this method is float.
Math.Idexp(float, integer)
log : This method returns the natural logarithm of numeric. The return type of this method is float.
Math.log(numeric)
log10 : This method return the base 10 of the logarithm of numeric. The return type of this method is float.
Math.log10(numeric)
sin : This method calculate the sine of numeric and expressed in radians. It return in the range[-1.0..1.0 ]. The return type of this method is float.
Math.sin(numeric)
Example:
Output:
0.0
sinh : This method calculate the hyperbolic sine of numeric and expressed in radians. The return type of this method is float.
Math.sinh(numeric)
sqrt : This method return the non-negative square root of numeric and raise ArgError if numeric is less than zero. The return type of this method is float.
Math.sqrt(numeric)
tan : This method return the tangent of numeric and expressed in radians. The return type of this method is float.
Math.tan(numeric)
tanh : This method calculate the hyperbolic tangent of numeric and expressed in radians. The return type of this method is float.
