C++ Mathematical Functions

#include <iostream>
#include <math.h>
using namespace std;
 
int main()
{
    double x = 8.1;
    cout << "Sine value of x=8.1; : " << sin(x) << endl;
    cout << "Cosine value of x=8.1; : " << cos(x) << endl;
    cout << "Tangent value of x=8.1; : " << tan(x) << endl;
 
    double y = 6.25;
    cout << "Square root value of y=6.25 : " << sqrt(y) << endl;
 
    int z = -50;
    cout << "Absolute value of z=-50 : " << abs(z) << endl;
    cout << "Power value: x^y = (8.1^6.25) : " << pow(x, y) << endl;
 
    x = 2.0;
    y = 1.0;
    cout << "Hypotenuse having other two sides as x=2.0 and"
         << " y=1.0 : " << hypot(x, y) << endl;
 
    x = 7.56;
    cout << "Floor value of x=7.56 is : " << floor(x) << endl;
 
    x = -5.43;
    cout << "Absolute value of x=-5.43 is : " << fabs(x) << endl;
 
    x = 6.0;
    cout << "Arc Cosine value of x=6.0 : " << acos(x) << endl;
    cout << "Arc Sine value of x=6.0 : " << asin(x) << endl;
    cout << "Arc Tangent value of x=6.0 : " << atan(x) << endl;
 
    y = 13.3;
    cout << "Ceiling value of y=13.3 : " << ceil(y) << endl;
 
    x = 33.3; 
    cout << "Hyperbolic Cosine of x=33.3 : " << cosh(x) << endl;
    cout << "Hyperbolic tangent of x=33.3 : " << tanh(x) << endl;
 
    y = 50.0;
    cout << "Log value of y=50.0 is : " << log(y) << endl;
 
    return 0;
}