Convert Degrees to Radians (C++)

radians.cpp

#include <iostream>
#include <math.h>    // for sin() and cos()
 
void getSinCos(double degrees, double &sinOut, double &cosOut)
{
    // sin() and cos() take radians, not degrees, so we need to convert
    static const double pi = 3.14159265358979323846; // the value of pi
    double radians = degrees * pi / 180.0;
    sinOut = sin(radians);
    cosOut = cos(radians);
}
 
int main()
{
    double sin(0.0);
    double cos(0.0);
 
    // getSinCos will return the sin and cos in variables sin and cos
    getSinCos(30.0, sin, cos);
 
    std::cout << "The sin is " << sin << '\n';
    std::cout << "The cos is " << cos << '\n';
    return 0;
}