The cosh()
function calculates the hyperbolic cosine of a number in radians.
The following illustration shows the mathematical representation of the cosh()
function.
cosh(num)
This function requires a number that represents an angle in radians as a parameter.
To convert degrees to radians, use the following function in Perl.
deg2rad(angleInDegrees)
This function returns the hyperbolic cosine of a number (in radians) sent as a parameter.
If the value of num
is NaN
.
If the value of num
is positive/negative infinity, then the return value is positive infinity
.
#this header for deg2rad() function use Math::Trig; #Positive number in radians $a = cosh(2.3); print "cosh(2.3): $a \n"; #negative number in radians $b = cosh(-2.3); print "cosh(-2.3): $b \n"; #converting the degrees angle into radians and then applying cosh() #degrees = 180 $rad = deg2rad(180); $c = cosh($rad); print "cosh($rad): $c \n"; #Inf values $d = cosh(Inf); print "cosh(Inf): $d \n"; $e = cosh(-Inf); print "cosh(-Inf): $e \n"; #NaN value $f = cosh(NaN); print "cosh(NaN): $f \n";
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