Given lengths III=85 for the given vectors a = (5, 2, 2) and parameters B = (2, B, 5), find:

A. 2a scalar products.
B. The projection Projₐ of the vector B = (2, B, 5) on the vector a.
C. Cosine cos(angle(a, B₅)) of the smallest angle between directions of the vectors a and B.
D. The value of the parameter k under which the vectors (2, B, k) are orthogonal to each other.
E. Coordinates of the vector which is orthogonal to the vectors a with the axis oy and satisfies the condition.
F. Coordinates of the vector e, which is collinear to the vector B and satisfies the condition that the scalar product e ⋅ 6 = 2.
G. Coordinates of the vector y, which is orthogonal to the vectors a and B and satisfies the condition that the scalar product g ⋅ cx is 0.
H. Coordinates of the vector in which is orthogonal to the axis oy and satisfies the condition that the scalar product h ⋅ a is 0.
I. The coordinate of the vector which is orthogonal to both vectors a and B under the condition that the projection Projₐ of the vector F on the axis ox is equal to B.