Pashino Govno

#include <stdio.h>
#define _CRT_SECURE_NO_WARNINGS

int main(void) {
    float A,B,C;
    printf("введите А В С\n");
    scanf("%f",&A,"/n");
    scanf("%f",&B,"/n");
    scanf("%f",&C);
    printf(" cos a =%4.3f\n",(C*C+B*B-A*A)/(2*B*C));
    printf(" cos b =%4.3f\n",(A*A+C*C-B*B)/(2*A*C));
    printf(" cos c =%4.3f\n",(A*A+B*B-C*C)/(2*B*A));
    return 0;
}