Method Arccos

TSMath.cpp:392–396

}

float Terathon::Arccos(float x)
{
	float r = Arctan(Sqrt(1.0F - x * x) / x);
	return ((x < 0.0F) ? r + Math::tau_over_2 : r);
}

float Terathon::Arctan(float x)
{