C Programming Solved Problems Let us C Yashwant Kanitkar Chapter 2

 Q:(g) If value of an angle is input through the keyboard, write a program to print all its Trigonometric ratios.

/* C Programming Solved Problems Let us C Yashwant Kanitkar Chapter 2 

Q:(g) If value of an angle is input through the keyboard,

write a program to print all its Trigonometric ratios.

*/

#include<stdio.h>

#include<math.h>

#define PI 3.141592

int main()

{

    double angle_deg, angle_rad,sin_val, cos_val, tan_val, cosec_val, sec_val, cot_val;

    printf("Enter angle in degrees:\n");

    scanf("%lf", &angle_deg);

    angle_rad = angle_deg * (PI / 180.0);

    sin_val = sin(angle_rad);

    cos_val = cos(angle_rad);

    tan_val = tan(angle_rad);

    printf("Trigonometric Ratios for %lf degrees:\n", angle_deg);

    printf("sin(%lf) = %lf\n", angle_deg, sin_val);

    printf("cos(%lf) = %lf\n", angle_deg, cos_val);

    

    if (fabs(cos_val) < 1e-6)

        printf("tan(%lf) = Undefined\n", angle_deg);

    else

        printf("tan(%lf) = %lf\n", angle_deg, tan_val);

        

    if (fabs(sin_val) < 1e-6)

        printf("cosec(%lf) = Undefined\n", angle_deg);

    else

        printf("cosec(%lf) = %lf\n", angle_deg, 1.0 / sin_val);

    if (fabs(cos_val) < 1e-6)

        printf("sec(%lf) = Undefined\n", angle_deg);

    else

        printf("sec(%lf) = %lf\n", angle_deg, 1.0 / cos_val);

    if (fabs(tan_val) < 1e-6)

        printf("cot(%lf) = Undefined\n", angle_deg);

    else

        printf("cot(%lf) = %lf\n", angle_deg, 1.0 / tan_val);

    return 0;

}

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