C Program To Convert Degree To Radian

Lets write a C program to convert angle from Degree to Radian.

Formula To Convert Degree To Radian

radian = degree x (M_PI / 180.0);

where M_PI is a constant present in header file / library file math.h and its approximately equal to 3.14;

Note: Trigonometric Ratios like Sin, Cos, Tan etc take radian value as input and not degrees. So its important to learn how to convert angles from degree to radian.

Video Tutorial: C Program To Convert Degree To Radian

YouTube Link: https://www.youtube.com/watch?v=3h9iUUlqTlA [Watch the Video In Full Screen.]

Source Code: C Program To Convert Degree To Radian

#include<stdio.h>
#include<math.h>

int main()
{
    float degree, radian;

    printf("Enter angle in Degrees\n");
    scanf("%f", &degree);

    radian = degree * ( M_PI / 180.0 );

    printf("Angle in Radian is %f\n", radian);

    return 0;
}

Output 1:
Enter angle in Degrees
90
Angle in Radian is 1.570796

Output 2:
Enter angle in Degrees
360
Angle in Radian is 6.283185

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