Question

The angle between vector and the resultant of (20+2P) and (20-2P)is

Answer 1

0^\circ

Answer 2

The question is ambiguous. Assuming (20+2P) and (20-2P) are magnitudes of two vectors, say $\vec{A}$ and $\vec{B}$, and they are collinear and in the same direction. Their resultant $\vec{R}$ will also be in the same direction. If "the vector" refers to one of the original vectors ($\vec{A}$ or $\vec{B}$), then the angle between this vector and the resultant is $0^\circ$.