W3School TIY Editor

#include <stdio.h> #include <math.h> int main() { printf("%f\n", asin(0.64)); printf("%f\n", asin(-0.4)); printf("%f\n", asin(0.0)); printf("%f\n", asin(1.0)); printf("%f\n", asin(-1.0)); printf("%f\n", asin(2.0)); return 0; }