Item Value
Header filemath.h
Declarationfloat cosf(float arg);double cos(double arg);long double cosl(long double arg);
Functionreturns the cosine of arg.
Parameterarg must be in radians.
#include
#include
int main(void)
{
double val = -1.0;
do {
printf("Cosine of %f is %f.\n", val, cos(val));
val += 0.1;
} while(val<=1.0);
return 0;
}
Cosine of -1.000000 is 0.540302.
Cosine of -0.900000 is 0.621610.
Cosine of -0.800000 is 0.696707.
Cosine of -0.700000 is 0.764842.
Cosine of -0.600000 is 0.825336.
Cosine of -0.500000 is 0.877583.
Cosine of -0.400000 is 0.921061.
Cosine of -0.300000 is 0.955336.
Cosine of -0.200000 is 0.980067.
Cosine of -0.100000 is 0.995004.
Cosine of 0.000000 is 1.000000.
Cosine of 0.100000 is 0.995004.
Cosine of 0.200000 is 0.980067.
Cosine of 0.300000 is 0.955336.
Cosine of 0.400000 is 0.921061.
Cosine of 0.500000 is 0.877583.
Cosine of 0.600000 is 0.825336.
Cosine of 0.700000 is 0.764842.
Cosine of 0.800000 is 0.696707.
Cosine of 0.900000 is 0.621610.
Cosine of 1.000000 is 0.540302.