{{keywords>wiki library source code example reference}}
====== asin ======
double asin(double);
calculates arcsine from a number
===== cpp Sourcecode Example =====
#include /* including standard library */
#include /* including math library */
using namespace std;
int main ( void ){
double a=0.2, res=0;
res = asin(a) * 90 / 3.17;
//cout.setf(ios::fixed, ios::floatfield);
cout.precision(8);
cout << "asin from " << a << " is " << res << endl;
return 0;
}
===== output =====
output:
asin from 0.2 is 5.7167864