#include <iostream>
#include <cmath>
using namespace std;
int main ()
{
	double  d3,arc2;;
	d3 = 3.141592 ; // PI value
	cout<<"\n---working with math acos----";
	//degrees to radian conversion)
	// radians = degrees * PI /180
	arc2 = acos(.5) * 180/d3; 
	cout<<"\n  acos(.5) * 180/d3 angle " << arc2; 
	arc2 = acos(.45) * 180/3.14159; 
	cout<<"\n acos(.45) * 180/d3 angle " << arc2; 
	cout << "\n --- asin in a for + loop ---";
	double j =1.0; 
	for( int i =0; i < 10; i++)
	{
	  arc2 = asin(j) * 180/3.14159;
      cout <<"\n sin "<<"\t\b "<<j<<"\t\b angle\t  : "<<arc2 ; 
	  j -= 0.0750; 
	}
	cout<<"\n---working with math acos and asin----";
	cout<<"\n---Angle 90--- "; 
	// for |_ 90
	arc2 = acos(0.0) * 180/d3;
	cout <<"\n arc2 = acos(0.0) * 180/d3;  angle = " << arc2;
	arc2 = asin(1.0) * 180/d3;
	cout <<"\n arc2 = asin(1.0) * 180/d3;  angle = " << arc2;
	//for |_ 45
	cout<<"\n---Angle 45--- "; 
	arc2 = acos(0.7071) * 180/d3;
	cout <<"\n arc2 = acos(0.0) * 180/d3;  angle = " << arc2;
	arc2 = asin(.7071) * 180/d3;
	cout <<"\n arc2=asin(.7071) * 180/d3;  angle = " << arc2;
	//
	cout << "\n--- asin in a for - loop ----";
	for(double i = 1.00; i >= 0.00; i-=0.15)
	{
	  arc2 = asin(i) * 180/3.14159;
	  cout <<"\n sin "<<"\t\b "<<i<<"\t\b angle\t  : "<<arc2 ; 
	}
  return 0;
}