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Acosh

Item Value Header filemath.h Declarationfloat acoshf(float arg);double acosh(double arg);long double acoshl(long double arg); Returnreturns the arc hyperbolic cosine of arg. ParameterThe argument must be zero or greater; otherwise a domain error will occur. #include <math.h>   #include <stdio.h>   int main(void)   {     double val = -1.0;     do {       printf(" %f.\n", val, acosh(val));       val += 1;     } while(val<=10.0);     return 0;   } -1.000000. 0.000000. 1.000000. 2.000000. 3.000000. 4.000000. 5.000000. 6.000000. 7.000000. 8.000000. 9.000000. 10.000000.