C库函数 sinh() C库函数 sin() C库函数 tanh() C库函数 sinh() #include <stdio.h> #include <math.h> int main () { double x, ret; x = 0.5; ret = sinh(x); printf("The hyperbolic sine of %lf is %lf degrees", x, ret); return(0); } C库函数 sin() C库函数 tanh()