Даны векторы a ={3,0,4}, b ={1,2,2} .
cos (fi) = (3*1 + 0*2 + 4*2)/(√(9 + 0 + 16)*√(1 + 4 + 4)) =
= 11/(5*3) = 11/15.
Даны векторы a ={3,0,4}, b ={1,2,2} .
cos (fi) = (3*1 + 0*2 + 4*2)/(√(9 + 0 + 16)*√(1 + 4 + 4)) =
= 11/(5*3) = 11/15.