PHP cosh( ) Function
Last Updated :
22 Jun, 2023
The cosh() function is a builtin function in PHP and is used to find the hyperbolic sine of an angle.
The hyperbolic cosine of any argument arg is defined as,
(exp(arg) + exp(-arg))/2
Where, exp() is the exponential function and returns e raised to the power of argument passed to it. For example exp(2) = e^2.
Syntax:
float cosh($value)
Parameters:This function accepts a single parameter $value. It is the number whose hyperbolic cosine value you want to find. The value of this parameter must be in radians.
Return Value: It returns a floating point number which is the hyperbolic cosine value of number passed to it as argument.
Examples:
Input : cosh(3)
Output : 10.067661995778
Input : cosh(-3)
Output : 10.067661995778
Input : cosh(2*M_PI)
Output : 267.74676148375
Input : cosh(0)
Output : 1
Below programs taking different values of $value are used to illustrate the cosh() function in PHP:
- Passing 3 as a parameter:
Output:
10.067661995778
- Passing -3 as a parameter:
<?php
echo ( cosh (-3));
?>
|
Output:
10.067661995778
- When (2*M_PI) is passed as a parameter, M_PI is a constant in PHP whose value is 3.1415926535898:
<?php
echo ( cosh (2*M_PI));
?>
|
Output:
267.74676148375
- Passing 0 as a parameter:
Output:
1
Reference:
http://php.net/manual/en/function.cosh.php
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