cacos

cacos

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Calculates the inverse cosine of a complex number

 #include <complex.h> double complex cacos ( double complex z  ); float complex cacosf ( float complex z  ); long double complex cacosl ( long double complex z  ); 

The cacos( ) functions accept a complex number as their argument and return a complex number, but otherwise work the same as acos( ).

Example

 double complex v, z ; double a = 0.0, b = 0.0; puts("Calculate the arc cosine of a complex number, cacos(z)\n"); puts("Enter the real and imaginary parts of a complex number:"); if ( scanf("%lf %lf", &a, &b) == 2) {   z = a + b * I;   printf( "z = %.2f %+.2f*I.\n", creal(z), cimag(z) );   v = cacos(z);   printf( "The cacos(z) function yields %.2f %+.2f*I.\n",           creal(v), cimag(v) );   printf( "The inverse function, ccos(cacos(z)), yields %.2f %+.2f*I.\n",           creal( ccos(v)), cimag( ccos(v)) ); } else   printf("Invalid input. \n"); 

See Also

ccos( ), csin( ), ctan( ), cacos( ), casin( ), catan( )