Пусть B- Начало координат
Ось X - BC
Ось Y - BF
Ось Z - BB1
Вектора
BC ( 1; 0; 0)
BB1 (0; 0; 1)
CD1(0.5;√3/2;1)
| BB1 ; CD1 | = | BC * BB1xCD1 | / | BB1xCD1 | = √3/2 / √(3/4+1/4) = = √3/2
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Verified answer
Пусть B- Начало координат
Ось X - BC
Ось Y - BF
Ось Z - BB1
Вектора
BC ( 1; 0; 0)
BB1 (0; 0; 1)
CD1(0.5;√3/2;1)
| BB1 ; CD1 | = | BC * BB1xCD1 | / | BB1xCD1 | = √3/2 / √(3/4+1/4) = = √3/2