Commit dc3d03e3 authored by KTKadyshev's avatar KTKadyshev
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parent 965f6fb2
#include <iostream>
using namespace std;
#include <math.h>
int main()
{
int a[3][1],b[3][1];
float skalar, modulea, moduleb;
a[0][0]=2;a[1][0]=-1;a[2][0]=0;
b[0][0]=1;b[1][0]=3;b[2][0]=-1;
skalar=a[0][0]*b[0][0]+a[1][0]*b[1][0]+a[2][0]*b[2][0];
modulea=sqrt(a[0][0]*a[0][0]+a[1][0]*a[1][0]+a[2][0]*a[2][0]);
moduleb=sqrt(b[0][0]*b[0][0]+b[1][0]*b[1][0]+b[2][0]*b[2][0]);
float cosalpha =skalar/(modulea*moduleb);
cout <<"косинус между векторами a и b = " << cosalpha << endl;
}
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