23/12/04 02:08:38.29 uA82POL4.net
#include <stdio.h>
#include <math.h>
#define PI 3.141592653589793238462643383279
int main(void)
{
double r = PI / 6;
printf("sin(%.16f) = %.16f\n", r, sin(r));
r = asin(0.5);
printf("sin(%.16f) = %.16f\n", r, sin(r));
}
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sin(0.5235987755982988) = 0.4999999999999999
sin(0.5235987755982989) = 0.5000000000000000
ラジアン派はこーゆーの気になんないの？