Trigonometry Functions in C++

[zacco44]

Is C++ in radians or degrees mode by default, and if in radians, how do i convert it into degrees?

[helios]

Trigonometric functions in the cmath header accept parameters in radians. This is typical behavior in all or nearly all programming languages.

radians = degrees * (pi / 180)

[integralfx]

Trigonometric functions are in radians.
1 radian = 180/π degrees.

#define PI 3.14159265358979323846
double DEG2RAD( const double deg )
{
	return deg * PI/180
}
double RAD2DEG( const double rad )
{
	return rad * 180/PI
}