Arcsin?

[EHaskins]

Asin can be found as MathUtils.asin.

http://www.sunspotworld.com/docs/Ora...MathUtils.html

[Anupam Goli]

Originally Posted by EHaskins

Asin can be found as MathUtils.asin.

http://www.sunspotworld.com/docs/Ora...MathUtils.html

Yea, he's right. Ignore what i said earlier, it should be in the MathUtils class. Click the logo in netbeans and find the class in the api documentation. Remember, all of those methods are static so you have to refer to them as MathUtils.asin(double a);

[Ether]

Or you could roll your own. Accurate to less than 3 minutes of arc.

#include <math.h>

double asin (double x) {

const double pi2=1.57079632679;

const double hroot2=0.707106781186;

double f(double x);

if (x<-hroot2) return -pi2+f(sqrt(1-x*x));

else if (x<0) return -f(-x);

else if (x<hroot2) return f(x);

else return pi2-f(sqrt(1-x*x));

}

double f(double x) {
return -0.000786215+x*(1.021878945+x*(-0.118183378+x*(0.344819444)));
}


void main (void) {
int i;
for (i=-100;i<=100;i++) printf("%f,%f\n",0.01*i,asin(0.01*i));
}